Triple-Tier Lockers: 3-Door Steel Lockers for High Headcounts
Three stacked lockers in every column put three times as many people on the wall as single-tier lockers, with each compartment still big enough for a backpack, a short jacket and a lunch. Compare triple-tier sizes and construction from Lyon and Tennsco, shop common sizes online, or send your headcount for a free layout and quote.
3 Doors
Per column, stacked
3×
Lockers per wall vs. single-tier
24″
Opening height on 72″ bodies
Free Layout
Headcount and room planning
What Is a Triple-Tier (3-Tier) Locker?
A triple-tier locker divides one steel locker column into three compartments stacked top, middle and bottom. Each compartment has its own door, latch and padlock hasp, so three people share the footprint of one full-height locker. On the standard 72″ body (78″ with legs) each opening is about 24″ tall — enough for a backpack, a gym bag, a folded jacket, boots or a lunch cooler.
You will also see them called 3-tier lockers, three-tier lockers, 3-door lockers or triple stack lockers. Tennsco describes its triple-tier lockers as fitting three times as many lockers in the space of a single-tier locker, and recommends them for health clubs, gymnasiums and other applications where ample storage must be balanced with space savings.
This page is part of our employee lockers and steel lockers guide. If your people need to hang a coat or a work shirt, compare double-tier lockers; if they only carry a phone, wallet and keys, see box lockers.
“Triple” tier or “three-wide”?
Two different things get called triple lockers. A triple-tier locker has three doors stacked in one column. A three-wide unit is three columns built side by side — it can be single-, double- or triple-tier. A three-wide triple-tier unit therefore has nine doors. If you are after three full-height lockers in a row, you want a three-wide single-tier locker.
3-Door Locker Styles and Configurations
Every triple-tier locker has the same three-door column. What changes is how many columns ship as one unit, the opening width and depth, the base and the finish. These are the triple-tier configurations listed in our online catalog from Tennsco and Lyon.
Configurations summarized from Tennsco’s steel locker brochure and product pages, Lyon’s standard triple-tier product page, and the Tennsco and Lyon triple-tier listings in our online catalog (Tennsco lists black, champagne/putty, light grey, medium grey and sand; Lyon lists dove gray and putty). A listing is not a stock guarantee — we confirm model, color and lead time on every quote.
3-Tier Locker Sizes and Dimensions
Triple-tier lockers are sized by opening width × depth × opening height, plus whether the unit is one or three columns wide and whether it has legs. Because three openings share one body, the overall height sets the size of every compartment.
| Dimension | Published options | What it changes |
|---|---|---|
| Opening width | 12″ or 15″ (Tennsco); 12″ (Lyon 5283) | Backpack and bag width, and how many columns fit on the wall |
| Depth | 12″, 15″ or 18″ (Tennsco); 15″ (Lyon 5283) | Whether a cooler, helmet or pair of boots fits on the compartment floor |
| Opening height | 24″ per compartment on a 72″ body | Bag height and whether a folded jacket or hard hat fits |
| Overall height | 72″ without legs; 78″ with 6″ legs | Total bank height and how high users reach for the top door |
| Units | One-wide (3 lockers) or three-wide (9 lockers) | Three-wide units bolt into long banks with fewer seams |
| Assembly | Welded (assembled) or unassembled (knock-down) | Setup time on site and freight cost |
Sizes from Tennsco’s steel locker brochure (it notes specific combinations per its price list), Tennsco’s TTS-121824-3 (36″ × 18″ × 78″ with legs, 12″ × 18″ × 24″ openings, nine openings) and TTS-121224-1 (12″ × 12″ × 78″ with legs, three 24″ openings) product pages, and Lyon’s 5283 triple-tier locker (12″ × 15″ × 24″ openings, 78″ with 6″ legs). In Tennsco model numbers the digits read width, depth and opening height — TTS-151824 is a 15″ × 18″ × 24″ opening. Some manufacturers also build shorter bodies with smaller openings; if a specific item has to fit, we confirm the clear dimensions before you order.
- 12″ × 12″ × 24″ openings are the compact school and office choice: a backpack, books or a lunch.
- 12″ × 15″ or 18″ deep is the common employee size: a gym bag, a cooler or a pair of boots fits on the compartment floor.
- 15″-wide columns give athletes and field crews room for bulkier bags, at the cost of fewer lockers per wall.
- Mind the top tier — on a 78″ unit the top compartment sits well above shoulder height, so assign it to people who can reach it comfortably.
How Many Triple-Tier Lockers Fit on a Wall?
Every column holds three lockers. Divide the usable wall run by the column width, round down, and multiply by three. Leave room for end panels, door swing at corners and anything on the wall such as outlets, thermostats or fire extinguishers.
| Usable wall run | 12″ columns | Triple-tier lockers (12″) | 15″ columns | Triple-tier lockers (15″) |
|---|---|---|---|---|
| 6 ft (72″) | 6 | 18 | 4 | 12 |
| 12 ft (144″) | 12 | 36 | 9 | 27 |
| 20 ft (240″) | 20 | 60 | 16 | 48 |
| 30 ft (360″) | 30 | 90 | 24 | 72 |
| Both sides of a 20 ft aisle | 40 | 120 | 32 | 96 |
Nominal column widths; actual bank length adds end panels and any filler. We confirm exact counts in the layout we send with your quote.
Three-wide units make the math easy. Each 36″-wide three-wide triple-tier unit adds nine lockers, so a 12-foot wall takes four units and 36 people. Mixing in one-wide units fills the last few inches of a run without leaving an awkward gap.
Plan for the busiest moment, not the average. In shift-based plants and warehouses, count everyone on site at shift change — the outgoing and incoming crews — plus seasonal staff and contractors. In schools and gyms, count the largest class or team that uses the room at one time.
Triple-Tier vs. Double-Tier vs. Single-Tier vs. Box Lockers
The key decision is how many doors go in each column. More doors means more people per foot of wall, but less hanging space for each of them. Triple-tier is the last step before the lockers become too short to hang anything.
| Single-tier | Double-tier | Triple-tier | Box (4–6 tier) | |
|---|---|---|---|---|
| Doors per column | 1 | 2 | 3 | 4 to 6 |
| Lockers per 12 ft of wall (12″ columns) | 12 | 24 | 36 | 48 to 72 |
| Opening height (72″ body) | About 72″ | About 36″ | About 24″ | About 12″–18″ |
| Hanging space | Full-length coats, uniforms | Jackets, shirts | Short or folded jacket, bag on a hook | None |
| Typical user | Changes clothes at work | Hangs a jacket, stows a bag | Backpack, gym bag, lunch, boots | Phone, wallet, keys |
| Best for | Plants, trades, public safety | Warehouses, retail, schools | Gyms, schools, high-headcount crews | Retail, offices, phone-free areas |
Top, middle or bottom? The middle compartment sits near waist to chest height and is the easiest to use; the top one means reaching up, the bottom one means bending down. Many facilities give bottom lockers to people who store boots or heavy bags and top lockers to those who carry light items. Tennsco lists ADA-compliant versions in which the bottom two lockers of a triple tier are the accessible units; our locker room design guide covers accessible placement, benches and aisles.
Mixing tiers is normal. Put a short run of single-tier or double-tier lockers where staff hang uniforms or coats, and triple-tier for everyone who just needs a bag spot.
Triple-Tier Locker Construction and Security
Triple-tier doors are short and stiff, but there are three of them opening and closing in every column, often by students or athletes in a hurry. Frame construction, latching and the cross members between doors decide how well the bank holds up. These are the published details for the lines in our catalog.
| Feature | What to look for | Published example |
|---|---|---|
| Steel gauge | Lower number = thicker steel. Doors and frames take the most wear. | Lyon standard triple-tier: 16-gauge one-piece doors and 24-gauge body parts, with lapped and welded door frame corners (Lyon). |
| Latching | A latch that engages the frame at more than one point resists prying. | Tennsco triple-tier: positive 2-point locking system on doors. Lyon: Metal Nano-Roller Latching System with a lockbar that engages the top and bottom of the frame. |
| Between doors | A cross member between compartments keeps doors aligned and secure. | Lyon triple-tier lockers include an intermediate cross member (ICM) between the doors. |
| Handle and hasp | A recessed handle keeps padlocks out of the aisle. | Lyon: recessed lift handle with a hasp for a user-supplied padlock; built-in combination or key locks are an option. |
| Ventilation | Louvers keep air moving around damp gym clothes. | Tennsco: flush louvers. Lyon: 6″-wide door louvers. |
| Interior | Hooks in every compartment. | Tennsco: three coat hooks per opening. Lyon: one triple-prong and three single-prong hooks per opening. |
| Door rigidity | Stiffeners resist bending and slamming. | Tennsco lists door stiffeners that add rigidity. |
| Base | Legs for cleaning underneath, or a closed base for a finished look. | Both lines list 6″ legs; Tennsco also lists no-leg units, and three-wide units with legs add four rear legs. |
Summarized from Tennsco’s steel locker brochure, Lyon’s standard triple-tier product page and the Tennsco and Lyon listings in our catalog. Manufacturers update specifications; we confirm the current sheet for your exact model.
Padlocks, built-in locks or electronic access? Recessed lift handles with a padlock hasp come standard on most triple-tier lockers: each person brings or is issued a padlock, which is simple and low cost when lockers are assigned for a semester or a season.
Built-in combination or key locks keep the door front flush and give staff a master key or control code, which speeds up reassigning lockers after turnover. When lockers are shared by day or by shift, or you need an access record, step up to smart locker systems with PIN, badge or app access.
Where Triple-Tier Lockers Work Best
Triple-tier lockers fit wherever many people need a secure spot for a bag rather than a place to hang clothes, and the wall is too short to give each of them a taller locker.
Planning and Installing Triple-Tier Lockers
Start with headcount and the room. Count the most people who need a locker at the same time, measure each usable wall run, and note doors, windows, outlets, drains and anything mounted on the wall. Check that the floor is level along the whole run — a tall, narrow bank shows every bump.
Tennsco strongly recommends that all lockers be anchored to the floor or wall, and multi-wide units are bolted together so the bank acts as one piece. Plan end panels for exposed sides, a closed base or legs, and sloped tops if you want to keep bags and dust off the top of the bank.
With three doors per column, up to three people can be at one column at once. Leave a clear aisle in front of the bank and keep benches far enough back that someone kneeling at a bottom locker is not in the walkway. Benches, aisle widths and accessible locker placement are covered in our locker room design guide.
Send headcount and space
Tell us how many people need a locker at peak, what they store, and the wall runs available — a sketch or photos are enough to start.
Choose size and tiers
We match width and depth to the bags and gear your people bring, and mix in single- or double-tier lockers where clothing has to hang.
Layout and quote
You get a layout with unit counts, locks, numbering, bases, end panels, sloped tops and benches, plus freight and optional installation.
Deliver and install
Freight to your site and optional installation, bank assembly and anchoring coordinated to your schedule.
A catalog listing is not a stock guarantee. Some common triple-tier sizes are in stock at select manufacturers, subject to confirmation, and we confirm availability and lead time on every quote. In Utah, our Salt Lake City team plans and installs lockers statewide — see our Utah lockers page or call 801-328-8788. For the Tennsco range, visit our Tennsco lockers page, or browse every locker category in our lockers directory.
Shop Triple-Tier Steel Lockers Online
Order common triple-tier sizes online, or request a quote for a full locker room with numbering, bases, benches, freight and installation.
More steel locker guides: single-tier lockers · double-tier lockers · box lockers · heavy-duty lockers · cubby lockers · Lyon lockers · Tennsco lockers · locker accessories. Start from the employee lockers overview to compare every type.
Get a free quote
Tell us what you are storing, the room size and your timeline. A project specialist will follow up with layout options and pricing. Prefer to talk? Call (800) 326-4403.
Triple-Tier Locker FAQs
What is a triple-tier locker?
What sizes do triple-tier lockers come in?
How tall is each compartment in a triple-tier locker?
What is the difference between triple-tier and three-wide lockers?
How many triple-tier lockers fit on a 12-foot wall?
Are triple-tier lockers ADA compliant?
Do triple-tier lockers need to be anchored?
Do you have triple-tier lockers in stock?
Plan Your Triple-Tier Locker Room
Send your headcount and wall space, and we will recommend sizes and a layout with a free quote.