How Far Apart Should Garage Shelves Be
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How far apart should garage shelves be? Work from the tallest bin on the shelf below: add clearance so it slides out, add the thickness of the shelf above, then round up to the unit’s adjustment step. Sterilite prints 15.77 to 16.125 inches between shelves on three of its garage units, and Edsal’s shelves move in 1.5-inch steps. The pages we opened do not say how much clearance a bin needs, so this guide shows the arithmetic with clearances we label as our own assumptions and leaves the final gap to your own measurement.
Quick answer
- Set each gap from the tallest item on the shelf below, not from a standard spacing. The manufacturer gaps we found suit bins up to about 15.5 inches tall.
- Round up to the shelf’s adjustment step. Edsal’s Z-beam, boltless and welded shelves move in 1.5-inch increments, and its chrome wire shelves in 1-inch increments.
- Tall bins change the answer. The 27-gallon Stacker tote is 19.375 inches tall and does not fit any of the Sterilite gaps in this guide.
- Different levels can have different gaps, and CCOHS says you can leave the lowest or highest shelf unused if necessary.
The gaps manufacturers print
Three Sterilite product pages print an “Interior Height between each shelf.” The 4 Shelf Unit lists 16.08 inches, the 5 Shelf Unit lists 15.77 inches, and the 4 Tier Tote Rack lists 16.125 inches. The first two pages describe the units as ideal for organizing storage bins, among other items. The rack page says it holds up to four 27 Gallon Industrial Totes. Sterilite lists that tote at 15.5 inches tall, so the rack gap leaves a stated difference of 0.625 inch (16.125 − 15.5).
| Sterilite unit | Shelves or tiers | Outside height (in) | Stated gap between shelves (in) | Gaps × count (our assumption: shelves − 1 gaps) | Height not in gaps (in) |
|---|---|---|---|---|---|
| 4 Shelf Unit | 4 | 57.125 | 16.08 | 3 × 16.08 = 48.24 | 57.125 − 48.24 = 8.885 |
| 5 Shelf Unit | 5 | 75.25 | 15.77 | 4 × 15.77 = 63.08 | 75.25 − 63.08 = 12.17 |
| 4 Tier Tote Rack | 4 | 57.5 | 16.125 | 3 × 16.125 = 48.375 | 57.5 − 48.375 = 9.125 |
The last column shows how much of a unit’s height is not usable gap. The pages do not say how many gaps their figure covers, so we assumed one fewer gap than shelves. On that assumption, 9 to 12 inches of each unit goes to the shelves themselves and to any space under the first shelf or above the last. A 75-inch unit therefore does not offer 75 inches of storage.
Check your bins against those gaps
The next table subtracts each bin’s outside height, from Sterilite’s product pages, from each stated gap. A positive number is spare height. A negative number means the bin is taller than the gap.
| Sterilite tote | Outside height (in) | Spare in 15.77 in gap | Spare in 16.08 in gap | Spare in 16.125 in gap |
|---|---|---|---|---|
| 10 Gal. Stacker Tote | 7.25 | 8.52 | 8.83 | 8.875 |
| 15 Gal. Industrial Tote | 11.875 | 3.895 | 4.205 | 4.25 |
| 12 Gal. Latch Tote | 13.875 | 1.895 | 2.205 | 2.25 |
| 27 Gal. Industrial Tote | 15.5 | 0.27 | 0.58 | 0.625 |
| 38 Gal. Industrial Tote | 15.875 | −0.105 (too tall) | 0.205 | 0.25 |
| 50 Gal. Stacker Tote | 17.875 | −2.105 (too tall) | −1.795 (too tall) | −1.75 (too tall) |
| 27 Gal. Stacker Tote | 19.375 | −3.605 (too tall) | −3.295 (too tall) | −3.25 (too tall) |
Three results stand out. A fixed gap of about 16 inches leaves little room around a 27-gallon Industrial tote, and 0.27 inch in the 5 Shelf Unit is hard to treat as clearance for sliding a bin in and out. The 38-gallon tote is 0.105 inch too tall for the 5 Shelf Unit’s gap. The two Stacker totes do not fit any of the three gaps, so a shelf plan built around the Stacker family needs wider spacing. Sterilite does not say which totes its unit pages were sized for, so these comparisons apply the printed figures to each bin and do not reflect the maker’s intent.
The adjustment step and the shelf thickness
Edsal’s spec sheets and knowledge-base pages give two numbers that control the gap you can actually set. The first is the step: shelves on its Z-beam, boltless and welded lines adjust in 1.5-inch increments, and the chrome wire shelving sheet says its shelves align on numbered posts at 1-inch increments. Gladiator’s shelving page says only that its heavy-duty shelves can be arranged at various heights and its EZ Connect shelves adjusted to the height you need, and it prints no increment.
The second number is thickness. Edsal’s sheet for a 48-by-24-inch particleboard unit lists the shelf size as 47.906 W x 23.906 D x .375 H, which we read as a deck three-eighths of an inch thick. The welded rack sheet we opened lists a shelf size without a thickness. The step moves the shelf, and the gap you get is the step distance minus the shelf’s own thickness and any beam under it. The sheets do not give the beam height, so any gap we compute is a minimum pitch, and you should measure the real gap after you set the shelf.
Round up to the step: a minimum-pitch table
The formula is: minimum pitch equals bin height plus clearance plus shelf thickness, rounded up to the next multiple of 1.5 inches. The table uses 0.375 inch for the thickness from the particleboard sheet and two clearances, 1 inch and 2 inches. Both clearances are our own assumptions, since none of the pages gives a figure. The pitch is measured from one shelf surface to the next.
| Sterilite tote | Height (in) | Height + 1 in + 0.375 in | Pitch, next 1.5 in step | Height + 2 in + 0.375 in | Pitch, next 1.5 in step |
|---|---|---|---|---|---|
| 10 Gal. Stacker Tote | 7.25 | 8.625 | 9.0 (6 steps) | 9.625 | 10.5 (7 steps) |
| 15 Gal. Industrial Tote | 11.875 | 13.25 | 13.5 (9 steps) | 14.25 | 15.0 (10 steps) |
| 12 Gal. Latch Tote | 13.875 | 15.25 | 16.5 (11 steps) | 16.25 | 16.5 (11 steps) |
| 27 Gal. Industrial Tote | 15.5 | 16.875 | 18.0 (12 steps) | 17.875 | 18.0 (12 steps) |
| 38 Gal. Industrial Tote | 15.875 | 17.25 | 18.0 (12 steps) | 18.25 | 19.5 (13 steps) |
| 50 Gal. Stacker Tote | 17.875 | 19.25 | 19.5 (13 steps) | 20.25 | 21.0 (14 steps) |
| 27 Gal. Stacker Tote | 19.375 | 20.75 | 21.0 (14 steps) | 21.75 | 22.5 (15 steps) |
The rounding creates a pattern worth knowing. Because the step is 1.5 inches, the 27-gallon Industrial tote gets the same 18-inch pitch under either clearance, while the 38-gallon tote jumps from 18 to 19.5 inches when the clearance goes from 1 to 2 inches. In both cases the pitch is larger than Sterilite’s printed 16-inch gaps, which is expected: Sterilite’s figure is the gap between shelves, and ours is the pitch, which also includes the shelf. Part of the difference is the shelf thickness, and the rest is clearance. If a bin’s pitch lands just under a step, round up and recheck, since the sheets do not say how much of each step is lost to the beam.
A four-level example
To put the pieces together, take a four-level Edsal welded rack, the ER7824W4, which Edsal lists at 78 inches tall with four shelf levels and 1.5-inch steps. The spec sheet does not state where the lowest shelf sits, so we assume the first shelf surface at 20 inches, which is our own assumption for the example. Each level’s pitch comes from the bin that stands on it, using the 1-inch clearance column above.
| Level | Bin on the level | Bin height (in) | Pitch to the next level (in) | Shelf surface height (in) | Top of the bin (in) |
|---|---|---|---|---|---|
| 1 | 27 Gal. Industrial Tote | 15.5 | 18.0 | 20 | 35.5 |
| 2 | 27 Gal. Industrial Tote | 15.5 | 18.0 | 20 + 18 = 38 | 53.5 |
| 3 | 15 Gal. Industrial Tote | 11.875 | 13.5 | 38 + 18 = 56 | 67.875 |
| 4 | 10 Gal. Stacker Tote | 7.25 | No shelf above | 56 + 13.5 = 69.5 | 69.5 + 7.25 = 76.75 |
The highest bin top is 76.75 inches, which is 1.25 inches under the 78-inch frame (78 − 76.75). That margin is thin because the frame at the top and the beam under each shelf are not in the arithmetic. Swap the 10-gallon Stacker on level 4 for a 12-gallon Latch tote at 13.875 inches and the top reaches 83.375 inches, which no 78-inch unit holds. A taller frame or a different first shelf height would fix that.
The same table shows the reach side of the question. The CCOHS fact sheet says what counts as a convenient height differs between people, and it recommends leaving the lowest or highest shelf unused if necessary. In the example, level 4 sits at 69.5 inches, so lighter or rarely used bins belong there, which is the University of Oregon sheet’s rule for overhead items. Our guide to adjustable height shelves covers units built around this kind of re-spacing, and our guide to garage storage shelf dimensions and heights lists unit sizes.
Spacing between units and walkways
The question can also mean how far apart to place two shelving units. The pages we opened give two manufacturer answers and no garage-specific distance. Edsal says its welded racks are expandable using a common post to connect more units, and Sterilite says a connector lets multiple Tote Racks attach side by side. Both describe joining units rather than leaving a gap. For walkways, the CCOHS fact sheet says to make sure there is enough space between aisles and walkways for the equipment and personnel present, without a measurement. For a garage, that leaves the distance to your own tape measure and your vehicles. For tote-specific shelving, see our guide to basement shelves for totes.
How we chose
This guide combines stated figures and labeled assumptions, and it does not rank shelves. We read the pages listed at the end of this guide on 2026-10-21. Gap figures come from Sterilite’s product pages, adjustment steps and shelf thickness from Edsal’s spec sheets and knowledge-base pages, and the reach points from CCOHS and a University of Oregon sheet. We included Sterilite’s three printed gaps because they are the only manufacturer gap figures we found, and we left out any maker that printed none. Every computed figure shows its inputs, and the 1-inch and 2-inch clearances and the 20-inch first shelf are labeled as our own assumptions.
Mistakes to avoid
- Using one standard gap for every level. The Stacker totes in the table need pitches of 19.5 to 22.5 inches, while the 15-gallon Industrial tote needs 13.5 to 15.
- Ignoring the step. Edsal’s 1.5-inch increments mean a pitch of 16.875 inches becomes 18 inches.
- Forgetting the shelf itself. A gap is smaller than a pitch by the thickness of the deck and beam.
- Trusting a 0.27-inch margin. The 5 Shelf Unit gap leaves that much around a 27-gallon Industrial tote, and no page says it is enough to slide the bin.
- Counting the unit height as storage. The Sterilite arithmetic puts 9 to 12 inches of each unit outside the gaps.
- Forgetting the top bin. The last level has no shelf above it, but the frame limits how tall that bin can be.
What we could not verify
The pages we opened do not state how much clearance a bin needs to slide in and out, and none gives a recommended spacing for garage shelves. Sterilite’s pages do not say how many gaps the “Interior Height between each shelf” figure covers or which bins the units were sized for. Edsal’s sheets do not print the height of the beam under a shelf, the lowest shelf position, or a thickness for wire decking. Gladiator’s pages that we could open print no spacing or increment. We could not open Rubbermaid’s or IRIS’s product pages for bin heights, and we could not open BIFMA’s site, so none of those is used. The Sterilite pages do not say whether a tote’s listed height includes the lid.
Frequently asked questions
What is the standard distance between garage shelves?
The pages we opened give no standard. The nearest figures are Sterilite’s printed gaps of 15.77, 16.08 and 16.125 inches on three units, which fit bins up to about 15.5 inches tall.
How much space should I leave above a storage bin?
No page we opened says. Our table uses 1 inch and 2 inches as assumptions, plus 0.375 inch for a particleboard shelf, and then rounds up to the shelf’s step.
Can I use different gaps on the same unit?
Yes, on units whose shelves adjust. Edsal’s Z-beam, boltless and welded shelves move in 1.5-inch steps, so each level can take its own pitch, as the four-level example shows.
Why does the pitch come out bigger than the printed gap?
The printed gap is the space between shelves, while the pitch runs from one shelf surface to the next and so includes the shelf’s own thickness. Edsal lists 0.375 inch for a particleboard deck, and the sheets do not give the beam height.
How far apart should two shelving units be?
The sources describe joining them. Edsal says its welded racks expand using a common post, and Sterilite offers a connector for its tote racks, while the CCOHS fact sheet asks only for enough space for aisles and walkways, with no figure.
Bottom line
Take the tallest bin on each shelf, add clearance and the shelf thickness, and round up to your unit’s adjustment step.
Sources
- Sterilite 5 Shelf Unit: https://www.sterilite.com/product/5-shelf-unit/ (opened 2026-10-21)
- Sterilite 4 Shelf Unit: https://www.sterilite.com/product/4-shelf-unit/ (opened 2026-10-21)
- Sterilite 4 Tier Tote Rack: https://www.sterilite.com/product/4-tier-tote-rack/ (opened 2026-10-21)
- Sterilite 10 Gal. Stacker Tote: https://www.sterilite.com/product/10-gal-stacker-tote/ (opened 2026-10-21)
- Sterilite 15 Gal. Industrial Tote: https://www.sterilite.com/product/15-gal-industrial-tote/ (opened 2026-10-21)
- Sterilite 12 Gal. Latch Tote: https://www.sterilite.com/product/12-gal-latch-tote/ (opened 2026-10-21)
- Sterilite 27 Gal. Industrial Tote: https://www.sterilite.com/product/27-gal-industrial-tote-2/ (opened 2026-10-21)
- Sterilite 38 Gal. Industrial Tote: https://www.sterilite.com/product/38-gal-industrial-tote-2/ (opened 2026-10-21)
- Sterilite 50 Gal. Stacker Tote: https://www.sterilite.com/product/50-gal-stacker-tote/ (opened 2026-10-21)
- Sterilite 27 Gal. Stacker Tote: https://www.sterilite.com/product/27-gal-stacker-tote/ (opened 2026-10-21)
- Edsal spec sheet, model ER7824W4: https://edsalmanufacturingcompany.freshdesk.com/helpdesk/attachments/153003547654 (opened 2026-10-21)
- Edsal spec sheet, model UR-245BLK: https://edsalmanufacturingcompany.freshdesk.com/helpdesk/attachments/153001476414 (opened 2026-10-21)
- Edsal spec sheet, model WS201232-C: https://edsalmanufacturingcompany.freshdesk.com/helpdesk/attachments/153001476884 (opened 2026-10-21)
- Edsal knowledge base, MuscleRack welded steel storage racks: https://edsalmanufacturingcompany.freshdesk.com/support/solutions/articles/153000070156-musclerack-heavy-duty-welded-steel-storage-racks (opened 2026-10-21)
- Gladiator shelving page: https://www.gladiatorgarageworks.com/pages/shelving (opened 2026-10-21)
- Canadian Centre for Occupational Health and Safety, MMH – Layouts for Storing: https://www.ccohs.ca/oshanswers/ergonomics/mmh/layoutstoring.html (opened 2026-10-21)
- University of Oregon, Shelving Safety sheet: https://safety.uoregon.edu/sites/default/files/safety_sheet_-_shelving_safety_final.pdf (opened 2026-10-21)
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