Cutting picking time with a better warehouse bin layout

Most picking improvement work fails because it treats picking as one number. Split it into travel, search and extract, measure each on your own floor, and the right bin layout falls out of the data.

Picking is three clocks, not one

When a production line complains that stores is slow, the figure that gets quoted is a single one — lines per hour, or minutes per requisition. That single number hides three separate activities that have nothing in common except that they happen in sequence. Travel is the time the picker spends moving between one pick face and the next, plus the walk out from the counter and back. Search is the time spent standing in front of the correct bay, working out which bin holds the part. Extract is the time from putting a hand on the bin to having the right quantity counted into the tote or tray. Each of these responds to a completely different intervention, and a change that helps one will very often hurt another.

The three clocks pull against each other, which is why untargeted improvement usually goes sideways. Squeeze every fast-moving part into one short run of shelving to kill travel, and you raise the number of part numbers a picker must discriminate between in a single glance, so search goes up. Give every part a generous, well-spaced bin so it is easy to see and easy to grab, and the pick face stretches down the aisle, so travel goes up. Shrink bins to pack more part numbers into the best heights, and replenishment frequency rises; the moment the face runs dry, pickers start walking to bulk storage, which is the most expensive travel in the building. You cannot optimise all three at once. You can only decide which one is currently costing you the most.

Bins and layout act on different clocks, and knowing which is which stops money being spent on the wrong thing. Aisle geometry, zone boundaries and the sequence in which the pick list is printed act on travel. Bin front width, labelling quality and how many part numbers share one bay act on search. Bin opening, internal depth, tilt and weight act on extract. That mapping is the reason it is worth separating the clocks before ordering anything: a stores team in Pune that buys two hundred new bins to fix what is actually a travel problem ends up with a much tidier store and exactly the same lines per hour. The bins were never the mistake. The diagnosis was.

Travel — walking. Fixed by zoning, aisle layout, cross aisles and pick-list sequence.
Search — standing still, looking. Fixed by addressing, labels, front-face width and visibility.
Extract — hand in the bin. Fixed by bin size, opening, reach depth, height and weight.

Measuring the three clocks on your own floor

You do not need a consultant or a time-study qualification for this. Two people, a clipboard, a phone stopwatch and three shifts of observation will do it. One person picks normally; the other stands back far enough not to hover, and records. Say plainly at the start that you are timing the store and not the person, and that nobody is being rated — skip that conversation and you will get an artificially brisk morning and a data set worth nothing. Run it on a Monday and again on a Friday if your dispatch pattern differs by day, and cover both the general shift and any second shift. A store that is quiet at 11:00 and chaotic at 16:30, which is the normal pattern where evening despatch trucks are booked out of Chennai, has two different problems and needs two sets of numbers.

For every pick line, record six things: the requisition number, the bin address, seconds from leaving the previous face to arriving at this one, seconds from arriving to touching the correct bin, seconds from touching the bin to the quantity being counted and confirmed, and a one-letter exception code. The exception codes end up mattering more than they look. Use E for empty bin, W for wrong part found first, N for no label or an unreadable one, S for a step stool or ladder being fetched, and B for a bin too heavy or too deep to work with one hand. Forty to sixty lines per zone is enough to see the pattern, and two hundred lines across the whole store is a comfortable data set for a stores team working in the gaps of an ordinary week.

When you total the columns, use the median rather than the average. One line where the picker had to go and find the storekeeper for a cupboard key will drag an average badly and tell you nothing useful about the other fifty-nine. Then produce three numbers per zone and write one sentence: in the fasteners aisle the median pick is 41 seconds, of which 22 is travel, 12 is search and 7 is extract. That sentence is the entire diagnosis, and it also defines what success will look like. Most stores improvement work is missing precisely this — without a baseline you will finish the reslotting, feel that things are better, and have nothing at all to put in front of the plant head who signed the purchase order.

Turning issue slips into an ABC list you can slot from

Slotting is driven by pick frequency, and pick frequency means lines — not rupees, not quantity. Export six months of issue lines from the ERP, or if the store still runs on paper, sit down with the issue slip file and tally by hand. Count one for every occasion a part number was issued, whether the quantity was two washers or two hundred. A cheap rubber grommet issued four times a day earns a better slot than an expensive bearing issued twice a quarter, and a purchase-value ABC — the version most stores already have, because it was built for stock valuation and audit — will tell you exactly the opposite. Many stores in the pump and motor cluster around Coimbatore have a beautiful value-based ABC that is actively misleading for slotting.

Rank the list by line count descending and draw two cut lines wherever the curve visibly flattens. Do not force a textbook eighty-twenty split, because your curve is your curve. In most engineering stores the A band turns out to be surprisingly small: a few dozen part numbers that appear on nearly every requisition, typically consumables, standard fasteners, seals, electrodes, gloves, cutting inserts and adhesives. B is the working body of the catalogue, and C is the long tail that still has to be findable but does not deserve prime frontage. Mark separately every part number with zero issues in twelve months. That list is where reclaimed space comes from, and it is almost always larger than the store believes it is.

Now add a second axis, because frequency alone will get you into trouble. For every A and B part number, record the cube of a single pick — the volume the picker actually carries away on a normal issue — and its weight. Fast-moving and small is the classic golden-zone shelf-bin case. Fast-moving and bulky belongs at waist height at the aisle end nearest despatch, in a tote or a floor-standing bin rather than on a shelf. Slow and small can go high, above the golden zone, where reaching costs seconds that are only rarely paid. Slow and bulky goes low, or out of the pick face entirely into bulk. Four rules, and between them they settle almost every argument about who gets the good shelf.

The golden zone, defined by your own team's shoulders

The golden zone is not a number you can copy out of a book, because it depends on the people who will actually work your aisles. Line up the storekeepers who do the picking and measure two heights on the shortest regular picker: knuckle height with the arms hanging, and shoulder height. The band between those two, on that person, is your golden zone. In practice it usually sits somewhere between mid-thigh and just below the shoulder. Anything in that band can be picked square-on, with both hands free, without a bend and without a stretch. Anything outside it costs either a squat or a reach, and that cost is paid on every single pick for as long as the part stays there.

The penalty zones cost more than they appear to. Below knuckle height a picker cannot see into an open-front bin while standing, so the bin has to be pulled forward or tipped, which pushes search time up as well as extract. Above shoulder height the contents are invisible, the reach is one-handed, and the moment a step stool has to be fetched the extract clock roughly doubles and a safety exposure is added on top. Watch for stools parked at aisle ends in older sheds around Delhi NCR — every trip to fetch one is travel that no stopwatch counted. The top level of a bay is legitimate storage for slow, light, clearly labelled items. It should never hold an A part and never hold anything heavy enough to tempt someone into bringing it down while standing on the second shelf.

Golden-zone frontage is scarce, and the arithmetic is worth doing before anyone starts arguing about it. Take one bay of shelving 1,000 mm wide. If your golden band is 700 mm tall and your shelf pitch is 350 mm, that bay gives two golden levels — two running metres of prime frontage per bay. Ten bays down one side of an aisle gives twenty running metres. Fill those with Panda Shelf Bin 301 units, whose outside dimensions are 315 × 100 × 60 mm and which therefore present a 100 mm front, and you have room for exactly 200 part numbers in the best positions in that aisle. If your A band is sixty part numbers you are comfortable. If it is four hundred, layout is not your problem; you need more frontage, and that is a different conversation and a different purchase.

Size the bin to the pick, not to the purchase lot

The most common sizing mistake in Indian stores is choosing the bin to hold the supplier's pack. A vendor in Rajkot ships circlips in bags of a thousand, so the store buys a container that swallows a thousand circlips, and now a part that is issued in fives sits in a box the picker has to dig through with two fingers. Bin size should be set by the replenishment interval, not the purchase lot. The bin holds what the face consumes between top-ups, plus a sensible buffer, and the balance of the bag stays in bulk storage where it belongs. If you top up daily, the face bin needs one day of demand and a margin — usually a far smaller bin than the store first assumes, and a cheaper reslot as a result.

Work in usable internal volume, never outside volume, and never plan to fill to the brim; above roughly eighty per cent full a picker starts spilling and stops being able to see the base of the bin. Published internal dimensions let you do all of this on paper before anything is bought. A Supra SB 1, outside 125 × 100 × 60 mm and inside 117 × 80 × 52 mm, gives about 0.49 litre gross and roughly 0.39 litre of sane working volume. A Hippo 612/T, outside 100 × 110 × 53 mm and inside 80 × 90 × 43 mm, is about 0.31 litre. A Bull Bin 5, inside 145 × 86 × 66 mm, is about 0.82 litre. A Rhino ARTB-05, inside 95 × 89 × 43 mm, is about 0.36 litre.

Step up the ranges and the scale changes quickly. A Panda Shelf Bin 301, inside 293 × 86 × 55 mm, holds about 1.39 litre. A Koala AKP-01, outside 130 × 105 × 60 mm and inside 105 × 90 × 55 mm, is about 0.52 litre. A Tote AK-421, outside 400 × 255 × 100 mm and inside 365 × 230 × 90 mm, is roughly 7.5 litre. A Mammoth bin, outside 820 × 315 × 300 mm and inside 740 × 250 × 290 mm, is close to 53 litre. Rather than converting part weights into volumes on a spreadsheet, settle it physically: take one sample bin, pour parts in to the eighty per cent line, count them, and write that number on the slotting sheet. Twenty minutes of counting will end sizing arguments that a spreadsheet would run for a week.

What is the top-up interval — daily, twice a week, weekly?
How many pieces move in that interval at peak, not at average?
How many of those pieces fit to the 80% line in the candidate bin?
Does the front width still let you fit all your A parts into golden frontage?

A worked example: reslotting a hardware and consumables wall

Suppose a fabrication unit on the Nashik industrial belt runs a hardware and consumables wall of roughly 900 part numbers, issued against job cards over a counter. The team times sixty picks and gets a median of 58 seconds — 30 seconds travel, 19 search, 9 extract. Search is unusually high because the wall grew organically over several years: bins of six different sizes, several labelled in marker pen, a handful of part numbers living in two places at once because nobody dared consolidate them. The issue-line tally shows 70 part numbers accounting for the large majority of lines, another 240 appearing at least weekly, and about 300 with no movement at all in twelve months.

The redesign is arithmetic rather than inspiration. Two bays nearest the counter, each 1,000 mm wide with two levels inside the golden band, give four running metres of prime frontage. At a 100 mm front that is 40 positions — not enough for 70 A parts — so the two adjacent bays are converted as well, taking the golden count to 80. The 70 A parts go there in shelf bins sized to one day of consumption. The 240 B parts take the levels immediately above and below in the same aisle. The 300 dead part numbers leave the wall entirely, which frees most of the bins the B expansion needs, so the actual purchase turns out to be a fraction of what the first estimate suggested.

If travel within the aisle falls because A parts are now clustered, and search falls because every position carries a printed address and a single unambiguous label, the median should come down considerably. The honest position, though, is that nobody knows until the same sixty picks are timed again. Re-time in the fourth week, not the first. The first week always looks good, because the store is spotless and everyone is paying attention. The number worth reporting is the one measured after the novelty has worn off, after three new part numbers have been added, and after somebody has already been tempted to put a carton down in the golden aisle because it was only going to be there for an hour.

Search time is an addressing problem, not a memory problem

Search time looks like a memory problem, and it almost never is. It is an addressing problem. Every storage position needs a fixed address printed in two places — on the shelf edge and on the bin itself — and it must be readable from the aisle at walking pace. A four-part code works everywhere: aisle, bay, level, position, written the way a picker reads left to right, for example A-04-C-07. Number bays from the aisle entrance, letter the levels from the floor upwards, and never renumber after a reslot without reprinting everything at the same time. A half-corrected address scheme is genuinely worse than no scheme, because the picker can no longer trust any label and reverts to hunting.

Printing the address on the shelf edge as well as the bin matters more than it sounds. If the address lives only on the bin, then the moment a bin is taken away for cleaning or carried to the machine, the location vanishes and something else drifts into the gap. Put the part number, a short plain-language description, the location code and the minimum and maximum quantities on the bin label, in that order, and use a printed label in a card slot or holder rather than marker pen — handwriting fades, and the person who wrote it will not always be the person reading it. Where two parts look alike, the transparent T versions of the Panda Shelf Bins let the picker confirm by eye before the hand goes in, which converts a slow search into a fast one.

Two more things quietly control search. First, the pick list must be printed in address order, not in the order the planner typed it — otherwise the picker walks the aisle three times and you will see it in the travel column, not the search column. Second, use colour as a coarse zone signal only, never as the identifier. A stores team in Ahmedabad that colour-codes by supplier will be in trouble the day the supplier changes; colour by zone or by department survives that. Keep confusable neighbours physically apart as well: two thread sizes of the same bolt should not sit side by side in identical bins, however tidy that looks on the drawing.

Front-face density: part numbers per running metre

Every bay involves a trade between three things: how many part numbers are visible from the aisle, how much stock sits behind each front, and how easily a picker can tell neighbouring bins apart. Running metres of frontage is the currency you are spending. A bin presenting a 100 mm front gives ten positions per running metre per level; one presenting a 165 mm front gives six. Adding stock depth behind the front is free in frontage terms but costs extract time, and putting a second bin behind the first — double-deep — is tolerable for slow movers and close to sabotage for fast ones, because the picker either works around the front bin or quietly moves it and never puts it back.

Walls are the most under-used frontage in most Indian sheds. Louvre panels turn a blank wall into hanging bin frontage; the Roo Tilt Bin wall units do the same in a fixed frame; and the ACO component organiser cabinets are the densest option of all for very small items. An ACO 18 measures 457 mm high × 424 mm wide × 164 mm deep, so it occupies roughly 0.19 square metre of wall and holds eighteen separate compartments — on the order of ninety part numbers per square metre of wall, with none of them competing for shelf frontage in the aisle. For electronics assembly stores of the kind common around Bengaluru, that density is often the difference between fitting a kit wall into the room and not.

There is a discrimination limit, though, and it is easy to cross while chasing density. Past a certain point of packing, a picker stops reading and starts pattern-matching on position, and the moment anything moves, the error rate climbs. Keep visually similar parts apart, keep a physical break every few positions so the eye has an anchor, and treat any bin narrower than a hand's width with suspicion for a fast mover. Pigeon hole units earn their place for documents, kit envelopes and job packets rather than loose components, where the compartment is doing an organising job rather than a picking one.

Extract time: opening, reach depth, tilt and grip

Extract is the clock most stores never touch, because seven or eight seconds sounds trivial against thirty seconds of walking. Multiply it by the annual line count and it stops being trivial. Four physical things govern it: the size of the bin opening relative to the picker's hand, how far into the bin the hand must travel, whether the contents can be judged without lifting or tipping the bin, and whether the whole operation can be done one-handed while the other hand holds a tote, a docket or a torch. Every one of those is decided at the moment you choose the bin, and none of them can be fixed later with training or with a notice on the wall.

Reach depth is the rule worth writing down. For an A part, the picker's hand should not have to travel further into the bin than the forearm reaches comfortably from a standing position. That is why a Mammoth bin, with 740 mm of internal length, is an excellent bulk and inter-departmental container and a poor front-line pick bin for small components. Open-front bins solve the visibility half of the problem by presenting an angled opening; tilt bins solve it differently by bringing the contents forward and up when the bin is swung out. Which of the two suits your parts is a real decision with real trade-offs, and it is worth reading through the comparison of tilt bins against open-front bins before standardising a whole aisle on either.

Weight and material toughness are the last part of extract. A bin that a picker has to lift with both hands is a bin that will be left half-pulled-out on the shelf edge, and that is how bins end up on the floor. Where parts are oily, sharp, heavy or handled by people wearing gloves, choose the ruggedised option rather than the lightest one — the ARTB series Rhino Tuff bins exist for exactly that duty, and a bin that survives being dropped is cheaper over five years than one that does not. All the ranges are moulded in polypropylene copolymer, so none of them will rust or absorb coolant, but stiffness and wall section still differ between ranges and that difference is felt in the hand.

Aisle width, trolleys and the shape of the pick round

Aisle width should be calculated from the widest thing that actually travels down it, not from a drawing standard copied off another site. Measure the picking trolley or crash cart across its widest point including handles, add clearance on both sides, then add the space a picker occupies while standing square to a bay with a bin front swung open or pulled forward. If pallet trucks share the aisle, the truck governs. If two people must pass, double the body allowance. It is entirely normal to find an aisle in an older Hyderabad shed that was wide enough when the trolleys were smaller and is now forcing pickers to reverse out of dead ends, which shows up as travel time nobody can explain from the pick list.

The shape of the round matters as much as its width. Long single-entry aisles force out-and-back walking; adding a cross aisle every few bays converts that into a loop and can cut walking distance sharply without moving a single bin. Zone the store so that a typical requisition is satisfied within one loop, and print the pick list in the order the loop is walked. Where trolleys are used, decide and mark where they park: a trolley abandoned mid-aisle turns a two-way aisle into a one-way aisle for everybody else, and the cost lands on people who had nothing to do with it. Floor marking is cheap and it is the only instruction that stays visible when the store is busy.

Protect the geometry once you have it. Aisle ends, upright feet and the corners nearest the despatch door take the impact of every trolley and every pallet truck in the building, and a bent upright is both a safety problem and the start of a slow drift back to the old layout. Rack protectors such as the Visipro range are there to absorb that. Equally, keep the golden aisle clear of staging: the single most common cause of a reslot unravelling is a pallet parked in front of the A bays because it was only going to be there for an hour, and nobody had the authority to move it.

Replenishment: stopping stockouts from generating travel

A face bin that runs empty is the most expensive event in the store, because it converts a five-second extract into a walk to bulk storage, a search in an area with no addressing discipline, and frequently a second person's time as well. The standard defence is the two-bin loop: two identical bins for the same part, one in use at the face and one behind or beside it. When the front bin empties, it is pulled out and put on a replenishment rail or board, the second bin slides forward, and picking continues without interruption. The empty bin is the signal — no card, no register entry, no message. That is precisely why it works on a busy floor.

Size the loop, do not guess it. The bin quantity should cover consumption over the replenishment lead time — the time between the empty bin appearing on the rail and the refilled bin coming back — plus a margin for a bad day. Decide who replenishes and when, and keep that work out of peak issue hours; a store in a Maharashtra auto-component unit that replenishes at shift changeover will interfere with picking every single day. Move refills from bulk in totes or Mammoth bins rather than by hand, use a trolley or a crash cart so one trip covers several positions, and keep bulk locations addressed with the same scheme as the face so the replenisher is not doing a search of their own.

Three things break the loop in practice, and all three are worth naming in the standard operating procedure. Partial top-ups destroy the signal, because a half-filled bin never empties cleanly and the loop stops being self-timing. Mixing batches in one bin destroys traceability the day a quality issue arrives. And a face bin that is quietly refilled in place, without the empty ever reaching the rail, hides the true consumption rate so bin sizes are never corrected. Stands, universal rails and shelving accessories exist to give the empties an obvious home; if the empty bin has nowhere to go, it goes back on the shelf, and the loop is finished.

Environment limits: temperature, humidity, ESD and chemicals

All the bin ranges are moulded in polypropylene copolymer, carry resin code 05, and have a service range of −10°C to +70°C along with food-safe and recyclable marks. That specification defines the boundary of sensible use quite clearly. These are not autoclave trays, they are not for hot degreasing tanks or direct steam cleaning, and they should not be parked against a furnace wall or under an unshaded roof sheet in a mezzanine. Before assuming an area is fine, put a thermometer at bin level for a full afternoon in the hottest month — an upper mezzanine in a Gujarat shed in May can read very differently from the floor below it, and it is the reading at bin level that matters, not the one at the office wall.

Humidity is where plastic bins earn their keep against steel. In coastal air around Mumbai, Navi Mumbai and Chennai, painted steel trays rust at the cut edges and then transfer that rust to the parts inside; polypropylene does not, and it washes down without consequence. The food-safe marks matter for packing lines and for food, pharma and cosmetics operations where a container may touch product. Oils, coolants and solvents need one sensible precaution: polypropylene tolerates a broad range of workshop fluids, but if you are storing an aggressive chemical, test with one bin and a sample of the actual fluid for a few weeks before committing an aisle to it.

Electronics assembly has its own rule and no exceptions to it. Ordinary coloured bins do not belong anywhere near unpacked boards, and this is not a matter of local practice — the ESD and conductive safe range exists precisely for those zones, and the boundary of the zone should be marked on the floor so nobody drifts a general-purpose bin across it during a busy shift. Assembly units around Bengaluru and the Tamil Nadu electronics belt often have a well-defined ESD area and a completely undisciplined staging table just outside it, which is where the damage actually happens. Slot the ESD zone with the same ABC discipline as everywhere else, using the correct bins throughout.

How a good layout decays in six months

Reslotting is easy to do once and very hard to keep. The first failure is ownership: if the slotting sheet does not have a named owner and a review date, it stops being maintained the week that person goes on leave. Print it, keep a copy at the counter and a copy with the stores in-charge, and treat any change to it as a document change rather than a decision somebody makes at the shelf. The second failure is new part numbers. Every new item added without a slotting decision goes into whichever bin happens to be empty, which is usually a good one, and within a few months the golden zone is full of parts nobody picks.

The third failure is overfilling. A bin filled past its working line becomes hard to see into, so a picker takes the easy option and starts a second location — an informal one, on a bench or in a carton on the floor. Second locations are how stock records go wrong, and they are almost always born from a sizing error rather than from indiscipline. The fourth failure is labelling drift: a printed label goes missing, someone writes the part number on masking tape, and the address scheme quietly develops a hole. Both of these are visible on a five-minute walk if somebody is actually looking for them, and invisible forever if nobody is.

The fifth failure is seasonal. An ABC list built on six months of a monsoon-heavy despatch pattern will be wrong by the next peak, and businesses in Kolkata and the eastern belt with strong festival seasonality see this sharply. Re-run the line-count tally every quarter; it is a twenty-minute job once the export is set up, and it usually moves only a handful of part numbers. Add a short audit walk to the monthly routine, with a fixed checklist, and record what you found rather than just fixing it silently — the pattern of findings tells you which of the five failures your store is actually prone to.

Any bin without a printed label, or with two labels.
Any bin filled above its working line, or empty with no empty on the replenishment rail.
Any part in two locations.
Anything staged on the floor in a golden aisle.
Any A part sitting above shoulder height or below knuckle height.

The five-day plan a stores team can run itself

This is designed to be run by the existing stores team, without stopping issues and without external help. The one precondition is a decision from above that the store may be closed to non-urgent issues for a few hours on the move day, and that the production planning team knows about it a week in advance. Pick a week with no month-end and no audit. Nominate one owner for the exercise and one person from production who will be consulted but does not get a veto — the second name exists because a reslot done entirely inside stores will be quietly resisted by the people who have to live with it, and consultation costs an hour while resistance costs months.

Day one is measurement and counting. Half the day goes on stopwatch observation as described earlier, and the other half on physically counting fill quantities into candidate bins for the top thirty or forty parts. Day two is data: pull the issue lines, tally by part number, draw the ABC cut lines, produce the dead list, and note cube and weight for the A and B bands. Day three is design on paper. Measure your actual bays, calculate golden running metres, allocate positions, decide bin sizes from the counts made on day one, and produce a picking list of what you already have against what must be bought — the dead-stock clearance normally supplies a large part of the gap.

Day four is the physical move, and it is the day that needs discipline. Clear the dead stock out first so there is room to work, then move the A band into the golden positions, then B, then C. Do not re-label as you go; move first and label in one pass afterwards, so that a half-finished aisle is never left in a state where nothing can be found. Day five is labels, shelf-edge addresses, updating the ERP location field, a walkthrough with every picker on both shifts, and a printed slotting sheet at the counter. Then wait three weeks, re-time the same sixty picks, and compare the three numbers against your day-one baseline.

Day 1 — time 60 picks per zone; count fill quantities into candidate bins.
Day 2 — issue-line tally, ABC cuts, dead list, cube and weight for A and B.
Day 3 — measure bays, allocate golden frontage, fix bin sizes, list what to buy.
Day 4 — clear dead stock, then move A, B and C in that order.
Day 5 — labels, shelf-edge addresses, ERP locations, walkthrough with both shifts.

Buying for the new layout, and the numbers to keep afterwards

Standardise on as few bin sizes as the work allows — three or four across the whole store is a good target — because every extra size multiplies your spares, complicates replenishment and makes shelf pitch harder to plan. Before committing to a size for a whole aisle, get one of each candidate and fill it with your actual parts; measured internal dimensions tell you the volume but only the real components tell you how they settle, whether they nest, and whether a gloved hand can get to the bottom corner. If you are still narrowing the field, the guidance on how to choose the right storage bin size covers the trade-offs in more detail than a slotting exercise has time for.

Plan accessories at the same time as bins rather than afterwards, because they are what make the layout hold its shape: partitions to subdivide bins when a part number splits, louvre panels and stands to create frontage where there is no shelving, rails and universal rails for replenishment loops, shelving units and pigeon hole units for the awkward middle sizes, and trolleys or crash carts so replenishment moves in one trip instead of six. Continuity of supply matters more than people expect at the point of the top-up order two years later, when you need eleven more bins in the same size and the same colour to extend an aisle — matching what is already on the shelf is far easier when the range has been available consistently and the catalogue is deep.

Shreeram Metafusion Engineers Pvt. Ltd. has been an authorised stockist of ALKON Plastics Pvt. Ltd. for over thirty years, with a catalogue of 476+ products across nine ranges, from Supra, Hippo, Bull and Rhino Tuff through Panda shelf bins and shelving, Koala pick bins, Roo tilt bins, ACO organisers, ESD safe products and Visipro rack protectors. The counter is at Shop-1, Gagangiri CHS, Sector 17, Vashi, Navi Mumbai 400703, open Monday to Saturday from 10:00 to 19:00, on 93266 29967 or 98201 01937, or by email at enquiry@shreeram-metafusion.com. Bring your measured bay dimensions and shelf pitch to that conversation rather than a rough idea, and bring a sample of the parts.

Finally, keep the measurement habit after the project ends, because it is the only thing that stops the layout drifting back. Re-time the same sixty picks in week four and again at the next quarter, and keep the three numbers — travel, search, extract — on a single sheet with the date. If travel has fallen and search has risen, you have over-densified the golden zone and should widen fronts or push some B parts out. If extract has risen, a bin is too deep or too heavy somewhere and the exception codes will tell you which one. Three numbers, reviewed quarterly, will keep a stores layout honest far longer than any amount of tidying will.