ATB A-DP51 Semi Truck Deck Plate, Diamond Tread Aluminum, Low Profile, Mounting Kit Included
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Fits the same truck
Features
- Diamond Tread Aluminum: ATB builds the A-DP51 from .125 aluminum with a bright diamond tread plate deck.
- Low 1.375" Profile: At 1.375" high it sits low on the frame behind the cab.
- Semi Top-Frame Access: It gives a safe place to stand when you work on the back of the truck and disconnect trailer hoses or connectors.
- Mounting Kit Included: ATB's M3120D clamp mounting kit comes with it.
- Fully Seam Welded: ATB seam welds its deck plates on all seams and corners, with reinforced decking supports.
- Five Depths: 34" wide in 24", 30", 36", 42" or 48" depth; ATB also builds custom sizes.
Description & Fitment
The ATB A-DP51 is a low-profile aluminum deck plate that mounts to the truck frame behind a semi tractor's cab. ATB designs it for stepping and standing on, so work on the back of the truck is safer and easier. It is 1.375" high and 34" wide in five depths, with a bright diamond tread deck and ATB's M3120D clamp mounting kit.
Fitment & Compatibility
How to choose: measure the frame space behind the cab front to back and pick the depth that fits; every A-DP51 is 34" wide and 1.375" high.
Want marker lighting? The A-DP52 is the same idea at 2.375" high with red rear and amber side LED lamps.
Fits: Semi tractor frame, behind the cab (check the 34" width and depth)
About ATB
American Truckboxes (ATB) builds aluminum and steel truck boxes, tanks and storage in Blanchard, North Dakota, and has done so for more than 25 years, by its own account. Its range covers pickup crossover, side-mount, chest and drawer boxes, service-truck boxes and packs, fuel tanks, and heavy-truck and trailer boxes.
Authorized ATB dealer. Prestige Truck is an authorized ATB dealer: every box on this page is built by ATB to the part number shown.
Frequently Asked Questions
Will it fit my tractor?
It is made for semi tractor frame mounting behind the cab. Compare your open frame space with the 34" width and the depth you pick.
Is a mounting kit included?
Yes. ATB's M3120D clamp kit comes with it: two mounting clamps, four 5/16" x 1" bolts, four nuts and eight washers.
Does it need drilling?
No. ATB predrills the deck plate; it clamps to the frame platform with the M3120D kit.
Can I get a different size?
ATB builds deck plates in custom sizes. Contact us with the size you need.
How does it ship?
By freight from the ATB factory in Blanchard, ND, with lift-gate delivery available. For Alaska, Hawaii or Canada, contact us for a freight quote before you order.
What should I check when it arrives?
Check it before the driver leaves: look it over for dents, scratches or shipping damage, note any damage on the delivery receipt and send us photos.
Installation
Here's the short version. Follow ATB's install sheet (below) for your truck's exact positions and hardware.
- Check all parts against the parts list and make sure there is room to mount the deck plate.
- Set the deck plate on the frame platform to confirm it fits there. The holes are predrilled.
- Fit both mounting clamps one at a time, insert the four bolts and run the nuts on lightly.
- Square the deck plate and tighten all four nuts securely.
- ATB warns: never drill the top or bottom flange of the truck or trailer frame, and never weld mounting brackets to the frame.
Stuck on a step?
- A-DP51 diamond tread aluminum deck plate
- M3120D mounting kit: two mounting clamps, four 5/16" x 1" bolts, four 5/16" nuts, eight 5/16" washers
Specifications
| Brand | ATB |
|---|---|
| Type | Semi truck deck plate |
| Material | .125 aluminum |
| Finish | Bright diamond tread plate |
| Height | 1.375" |
| Width | 34" |
| Lights | None |
| Mounting kit | M3120D (included) |
| Made in | USA |
| Part number | A-DP51-22434-T |
| Part # | Size | Weight |
|---|---|---|
| A-DP51-22434-T | 1.375"H x 24"D x 34"W | 18 lbs. |
| A-DP51-23034-T | 1.375"H x 30"D x 34"W | 23 lbs. |
| A-DP51-23634-T | 1.375"H x 36"D x 34"W | 26 lbs. |
| A-DP51-24234-T | 1.375"H x 42"D x 34"W | 30 lbs. |
| A-DP51-24834-T | 1.375"H x 48"D x 34"W | 34 lbs. |
Warranty, shipping & returns
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Warranty
ATB covers its standard truck boxes with a 60-month (5-year) limited warranty for the original purchaser; it is not transferable.- For a warranty claim, contact us with your order number and photos and we will work it through with ATB.
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Shipping
Ships by freight from the ATB factory in Blanchard, ND; lift-gate delivery available.- Alaska, Hawaii and Canada: contact us for a freight quote before you order.
- We email your tracking details as soon as it ships.
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Inspect on delivery
Check the box when the freight arrives, before the driver leaves: look over the lids, doors, corners and welds for dents, scratches or shipping damage. Note any damage on the delivery receipt and send us photos. Check it as soon as it arrives.- Look for crushed ends, punctures or tears in the carton.
- If something looks wrong, take photos of the box and the parts (and if a driver asks you to sign, note the damage on the receipt).
- Open the box and check the parts against the parts list before you install.
- Email support@prestigetruck.com right away with your order number, a short note and photos. We send a replacement or a full refund at no cost to you.
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30-day returns
Return it within 30 days of delivery, unused, in the original packaging, with proof of purchase.- Email support@prestigetruck.com with your order number. We reply within 1-2 business days with instructions.
- Damaged, defective or wrong item: we send a prepaid label or arrange a pickup.
- Changed your mind: you pay return shipping. No restocking fee.
- Refunds go back to your original payment method within 7 business days of approval. See our returns policy.