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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
2005 Freightliner SL Series
etrailer Installation
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Lomax

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

Part Number: LOM36JR
In Stock
$1,353.60
Retail:$1,504.00
You Save: $150.40
Tonneau Cover
Not Confirmed to Fit

2005 Freightliner SL Series

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Product Images

etrailer Installation
We'll connect you with nearby partnered installers who know this exact setup.
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 LOM36JR can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
  • All Info
  • Reviews (6)
  • Q & A (0)
  • Photos

Lomax Tonneau Cover - LOM36JR

Highlights

  • Custom Fit for Your Vehicle: Secures to your truck bed with model-specific clamps and hardware
  • Keeps Gear Safe: Locks with your tailgate and secures at 10 points to stop theft.
  • Quick Full Bed Access: Tri-fold panels remove without tools for total cargo space.
  • Handles Heavy Loads: Aluminum panels hold up to 400 lbs of evenly distributed weight.
  • Stays Dry: Rubber seals and vinyl-coated hinges block water and dust.
  • Sleek Low Profile: Sits about 1/2" above bed rails for a clean, aerodynamic look.
Made in USA

Features to know about

Built for the Job: Heavy-Duty Aluminum Panels

This cover is made for serious use. The three impact-resistant panels are built from heavy-duty aluminum that’s 20 percent stronger than aluminum body parts, yet the whole cover weighs only about 50 lbs. That means it’s tough enough to handle hail or falling tools while still being light enough for one person to remove. With a 500-lb weight capacity, it’s built to take on real work without giving up convenience.

Closed Lomax Professional Series tonneau cover protecting truck bed with durable aluminum diamond plate panels.

Secure Storage: 10-Point Locking System

When you fold this cover shut and lock your tailgate, your gear stays protected. The panels automatically latch to the side rails at 10 points—hooks at the front, additional hooks along the channels, and latches that engage as the cover lowers. There are no exterior locks for someone to tamper with, so your cargo stays out of sight and out of reach.

Close-up of hooks and latches securing Lomax hard tonneau cover to truck bed rails for maximum security.

All-Weather Confidence: Weathertight Seals and Water-Shedding Design

Rain, dust, and grime stay outside where they belong. Continuous rubber seals run the full length of the rails, and vinyl-coated panel hinges keep moisture from sneaking in between sections. The cover also has a slight arc that lets water roll off instead of pooling, so drainage tubes aren’t needed. Whether it’s downpour or snow melt, your bed stays dry and clean.

Watertight rubber seals and vinyl-coated hinges on Lomax tonneau cover preventing water and dust entry.

Full Bed Access: Tri-Fold Flexibility

You don’t lose bed space when you need to haul something big. Just pull the release cords at the tailgate and fold the panels forward—built-in straps hold them securely against the cab so you can drive with most of your bed open. When you need complete access, lift the folded cover off without tools. The design keeps rear window visibility clear and makes switching from full coverage to full access quick and simple.

Lomax Professional Series hard folding tonneau cover partially folded to show tri-fold design for easy truck bed access.

Close-up of Lomax tonneau cover latch and release cable showing easy-access opening near truck tailgate.

Integrated storage clips and retractable straps securing folded Lomax tonneau cover at truck cab.

Lomax tri-fold tonneau cover folded upright at truck cab to allow hauling tall cargo and maintain rear visibility.

Clean Look, Easy Fit: Low-Profile Mounting

This cover sits only about 1/2" above the bed rails for a smooth, streamlined look that cuts wind noise and drag. The diamond plate aluminum has a black diamond mist finish that resists scratches, impacts, and UV damage. It installs with eight Tight Bite clamps—no drilling required—and keeps stake pockets open for racks or gear mounts. The result is a secure, finished look that works hard every day without getting in your way.

Low-profile Lomax Professional Series hard aluminum tonneau cover with black diamond mist finish flush with truck bed rails.

Installing Lomax hard tonneau cover by sliding panels onto truck bed side rails during no-drill installation process.

Safety strap and carabiner connection on Lomax folding tonneau cover for additional security when panels are folded.

Specs

Weight and Capacity

  • Weight capacity: 500 lbs

Warranty

  • Warranty: 3-Year limited warranty

B0050079 Lomax Professional Series Hard Tonneau Cover - Tri-Fold - Aluminum - Black Diamond Mist

Installation Details LOM36JR Installation instructionsAlternate Instructions LOM36JR Installation instructions

This Product Fits The Following Vehicles

  • 2022 - 2028 Toyota Tundra 5-1/2 Foot Bed - without Deck Rail System



Ratings & Reviews

5.0

6 reviews
5 Stars
(6)
4 Stars
(0)
3 Stars
(0)
2 Stars
(0)
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 Wilson B
Updated by:
Wilson B
Employee Matthew S
Written by:
Matthew S
Employee Daron K
Edited by:
Daron K

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