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  1. Tonneau Cover
  2. Lomax
  3. Fold-Up - Hard
  4. Low Profile - Top of Bed Rails
  5. Rack Compatible
  6. Aluminum
THIS ITEM IS NOT A FIT FOR
2008 Chevrolet Silverado
etrailer Installation
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Lomax

Lomax Professional Series Hard Tonneau Cover - Folding - Aluminum - Black Diamond Mist

Part Number: LOM37FR
In Stock
$1,442.70
Retail:$1,603.00
You Save: $160.30
Tonneau Cover
Not Confirmed to Fit

2008 Chevrolet Silverado

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Product Images

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Tri-fold cover secures to side rails at 10 points for maximum security for your truck bed and cargo. Heavy-duty, lightweight aluminum panels feature a diamond plate finish for a bold, aggressive look. Easy to remove without tools for full bed access. Great Prices for the best tonneau cover from Lomax. Lomax Professional Series Hard Tonneau Cover - Folding - Aluminum - Black Diamond Mist part number LOM37FR can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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  • Reviews (6)
  • Q & A (0)
  • Photos

Lomax Tonneau Cover - LOM37FR

Highlights

  • Custom Fit for Your Vehicle: Secures to your truck bed with model-specific clamps and hardware
  • Locks Your Gear Down: Hard aluminum panels secure at 10 points and lock with your tailgate.
  • Full Bed Access Fast: Tri-fold panels lift off without tools for open hauling space.
  • Keeps Cargo Dry: Rubber seals and waterproof hinges block rain and dust.
  • Built to Take a Beating: Aluminum panels hold 400 lbs evenly and resist impacts.
  • Low-Profile Look: Sits 1/2" above rails for a clean, aerodynamic finish.
Made in USA

Features to know about

All-Season Cargo Protection: Weathertight Seals and Arched Design

Keeping gear dry through rain, snow, or dust is easy with the Lomax Professional Series. Continuous rubber seals run the full length of the side rails, and the vinyl-coated panel hinges form a tight barrier against water and debris. The cover’s slight arc helps shed water naturally without drain tubes, so moisture rolls off instead of pooling. Whether it’s a downpour or a dusty trail, your cargo stays protected inside.

Close-up of Lomax tonneau cover weathertight rubber seal along truck bed rail

Strong Yet Light: Heavy-Duty Aluminum Panels

Each of the three folding panels is built from impact-resistant aluminum that’s 20 percent stronger than aluminum truck body parts. Even with that strength, the entire cover weighs only about 50 lbs., giving it a high strength-to-weight ratio. It supports up to 400 lbs. of evenly distributed weight, so you can load gear on top without worry. The black diamond mist finish resists scratches, absorbs impact, and stands up to UV exposure for long-term durability.

Lomax Professional Series closed tonneau cover protecting truck bed and cargo

Full Bed Use: Tri-Fold, Quick-Release Design

When you need open bed space, the tri-fold design gives you access to two-thirds of the bed in seconds. Just pull the release cord at the tailgate, fold the panels, and secure them with the built-in retractable straps and clips. For complete access, lift the folded cover and slide it forward to release it from the side rails—no tools or extra hardware needed. The design leaves stake pockets open for racks and accessories, keeping your setup flexible.

Lomax Professional Series tri-fold aluminum tonneau cover folded up for quick truck bed access

Close-up of Lomax tonneau cover latch and release cable near tailgate

Folded Lomax tonneau cover secured with integrated storage clips and retractable straps at truck cab

Lomax tri-fold tonneau cover folded up for hauling larger items while keeping bed partially covered

Low-Profile Look and Efficient Ride: ½-Inch Above Bed Rails

The sleek, low stance—about ½ inch above the bed rails—gives the truck a clean, streamlined look. The aerodynamic fit helps reduce wind drag and noise, improving fuel efficiency while keeping the cover stable on the road. The diamond plate finish adds a bold, professional touch that matches the cover’s rugged build.

Low-profile Lomax black diamond mist tonneau cover flush with truck bed rails

Secure Storage: 10-Point Latching System

For peace of mind when leaving tools or gear in the bed, the panels automatically lock down at 10 points along the side rails. With the tailgate closed and locked, the entire bed is sealed and secured. There are no external latches to pry open, making this hard cover a solid deterrent against theft while protecting valuable cargo inside.

Close-up of Lomax tonneau cover hooks and latches securing panels to side rails

Specs

Weight and Capacity

  • Weight capacity: 500 lbs

Warranty

  • Warranty: 3-Year limited warranty

B0040079 Lomax Professional Series Hard Tonneau Cover - Tri-Fold - Aluminum - Black Diamond Mist

Installation Details LOM37FR Installation instructions

This Product Fits The Following Vehicles




Ratings & Reviews

5.0

6 reviews
5 Stars
(6)
4 Stars
(0)
3 Stars
(0)
2 Stars
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1 Star
(0)
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by:
This is the 2nd time I have bought my tonneau cover and side rails for my truck and once again the products are top notch and look amazing on my truck. My first purchase was for a Nissan Frontier Pro4X. This time it was for a GMC Sierra 1500 crew cab. Thank you too E-Trailer for helping make my truck awesome. I highly recommend E-Trailer for any after market upgrades.
Kate F. profile picture
Etrailer Expert

Kate F.

3/18/2026

Thanks for including the picture Andy, the cover looks sharp on your red truck! Thanks for being a loyal etrailer neighbor (customer).

by:
2020 Toyota Tacoma
The product is excellent! The only problem I had is that the box it was shipped in was very damaged, one side torn open. There was no damage to the product and all parts were there but the shipper did a very poor job patching up the box.
by:
Great product! Easy install!
by:
Relatively easy to install, looks great and seems to fit well. Etrailer delivered promptly, had great follow up and I will be ordering from them again! Great employees, I loved the self help videos done by the employees..
Dan profile picture

Dan

4/4/2023

Awesome! Keeps things in the bed dry and safe. It’s sturdy, quiet and efficient to open and close. If I have something taller than the bed walls, it folds up easily into a compact size so it can be easily stored in the bed, and put back in when cargo is removed

by:
We really like ths cover. Keeps the camping equipment in our truck secure and looks pretty flasy on our Laramie.
by:
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See what our Experts say about this Lomax Tonneau Cover


Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Wilson B
Updated by:
Wilson B
Employee Mark S
Written by:
Mark S

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