Why trailer unit number?
- Letters and digits, 1 to 6 characters
- Heights 2 to 6 in, 13 vinyl colors
- A whole trailer numbering range in one order
- Transfer tape keeps digits aligned
Trailer Unit Number
Unit numbers for trailers, cut to the height you specify.
Read moreFrom $13.85 per stickerHow it works
What you get
- Material
- Single Color — Single-colour film, plotter cut
- Durability
- 5+ years outdoor
- Finish options
- Transfer Tape, Reflective
- Application
- Clean, dry surface. Peel, align, squeegee from the centre out. Removes later without residue — about 10 minutes per door.
- Proof
- Free, unlimited changes
- Turnaround
- 24h after proof approval
- Shipping
- Standard delivery $8.95 · free over $150 · 3 to 5 business days · Local pickup free
Description
What it is
Trailer Unit Number decals carry the number your own fleet gives each trailer — the one dispatch, the yard and the shop use to find a specific unit — cut from single-color vinyl at a letter height of 2, 3, 4 or 6 inches. Each number holds 1 to 6 characters, letters and digits both allowed, so formats like "T-205" or "53012" work. Send the whole numbering range in one order and every trailer gets the same font, height and color. Fleets also search for them as trailer number decals or trailer ID stickers.
Where fleets put trailer numbers
A trailer number usually goes in more than one place: high on the nose, where a yard spotter can read it from a distance; on the rear doors, where a dock worker sees it while the trailer is backed in; and on the side near the front corner for anyone walking the yard. Repeat the same positions on every trailer so nobody has to hunt for the number.
A unit number is your own internal ID, set by your fleet's convention. It does not replace the USDOT number marking, which is a separate product — see the USDOT Number Sticker — and if a customer or yard asks for trailer numbers in a particular place or size, follow their instruction.
Sizes and pricing
Letter heights of 2, 3, 4 and 6 inches are available, with a character count from 1 to 6. The price is per sticker, so order one for every surface you mark — nose, rear door and side are three stickers per trailer. The live price on this page updates as you change the options.
Readability by letter height
| Letter height | Rule-of-thumb readable distance |
|---|---|
| 2 in | about 20 ft — close checks at the dock or on a walk-around |
| 3 in | about 30 ft — yard readability at a walk |
| 4 in | about 40 ft — a spotter in a yard truck |
| 6 in | about 60 ft — read from across a lot or while backing into a door |
This is a rule of thumb, not a guarantee — pick the height based on how far away someone typically needs to read it.
Why it holds up
Cut from single-color vinyl in 13 standard colors rather than printed, trailer numbers will not fade unevenly and are rated for 5+ years outdoors — important, since the number usually stays on for the working life of the trailer. Free transfer tape keeps multi-character numbers aligned during installation, and Reflective film is available if trailers need to be identified at night. The Car Vinyl material is there if you want the number printed in full color instead.
Who this is for
- Dry van, reefer and flatbed fleets — one consistent numbering scheme across every trailer for dispatch and maintenance tracking.
- Trailer pools and leasing yards — numbering ranges laid out by terminal or customer.
- Drop-and-hook operations — drivers and yard staff who find a trailer by its number.
- Growing fleets — new trailers numbered to match the rest.
How to order and proof
Type your numbers on this page or in the Design Studio, or send a list for a whole range in one order — no design file is needed. Every order includes a free digital proof with unlimited free changes before anything is cut.
How to apply
- Wash the surface with soap and water, then wipe it with rubbing alcohol and let it dry completely — any wax, dust or grease under the vinyl will shorten how long it holds.
- Work in a shaded spot between about 60 and 90 degrees F. Direct sun makes the adhesive grab too fast; cold makes it grab too slowly.
- Peel back a corner of the backing paper and tack the decal in place to confirm the position before committing.
- Use a strip of painter's tape as a hinge at the top so the decal stays aligned while you peel away the rest of the backing paper.
- Squeegee from the center outward in overlapping passes to push air out toward the edges, not trap it in the middle.
- Squeegee firmly over the transfer tape, then peel it back slowly at a low angle, checking that every letter released onto the surface.
- Press down any edges or corners that did not fully bond, working from the center out.
- If a small air bubble remains, prick it with a pin and press it flat — do not try to squeegee a large bubble out through the edge.
- Give the adhesive time to cure — avoid washing for at least 48 hours after installation.
Removal and care
Warm the film with a hair dryer or heat gun on a low setting, then peel it back slowly at a low angle rather than straight up — heat keeps the vinyl from tearing into small pieces. Any adhesive left behind comes off with an adhesive remover or rubbing alcohol, then a regular wash. It can stay on through winters and regular washing and come off later without stripping paint, as long as the paint underneath is in normal condition. When a trailer is sold, re-leased or renumbered, the panel is ready for a new number without a ghost outline of the old one.
- Cut from single-colour vinyl — no print to fade
- Send the whole numbering range in one order
- Priced per sticker; order one for every surface you mark
- Transfer tape included
Finish options
Reviews
FAQ
What is a trailer unit number decal?
It is your own fleet number for a trailer, cut in vinyl so dispatch, the yard crew and the shop can identify one specific unit at a glance. You choose the digits, the letter height and the color.
Is a trailer number required by law?
A unit number is set by your own fleet's convention, and it does not replace the USDOT number marking, which is a separate product. If a customer or yard asks for trailer numbers in a particular place or size, follow their instruction.
Can I include letters, not just digits?
Yes. Trailer numbers accept both letters and digits, from 1 to 6 characters, so formats like "T-205" work.
What heights are available?
2, 3, 4 or 6 inches. The 6-inch option suits numbers that need to be read from across a yard or while backing a trailer into a door.
How many stickers should I order per trailer?
The price is per sticker, so order one for every surface you mark. Many fleets mark the nose and both rear doors, and some add a side number.
Can I order numbers for a whole range of trailers at once?
Yes. Send the full list of numbers in one order and every trailer gets matching font, height and color.
What colors can I choose?
13 standard colors, cut from single-color vinyl rather than printed, so the color will not fade unevenly over years outdoors. Choose one that contrasts with the trailer panel.
Can I add reflective film?
Yes. Reflective is available as an option so the number reads in headlights when trailers are identified at night.
I do not have artwork — can I just send the numbers?
Yes. Type or list your numbers on the page or in the Design Studio; no design file is needed.
Do I see a proof first?
Yes. Every order includes a free digital proof with unlimited free changes before anything is cut.
How do I install it?
Clean the panel, apply the transfer-taped number as one piece, squeegee it on, then peel back the transfer tape slowly at a low angle — see How to apply above; transfer tape is included free.
Will removal damage the paint?
No, as long as the paint underneath is in normal condition — warm the film and peel at a low angle for a clean release with no residue. Wait about 48 hours after installing before washing the trailer.
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