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How to Measure Truck Box



Heavy duty without the heavy weight, LOMAX™ Professional Series is the right truck box cover for any job site. Emphasizing a one-person operation, this hard tri-fold cover is easy to install or remove. Sturdy diamond plate aluminum panels and a water-shedding design with strong, waterproof hinges shield your cargo and stop elements from entering the truck box. We added extra aluminum channels to each panel, enhancing strength to make the LOMAX™ Professional Series Tonneau Cover even more durable with minimal increased weight. A ten point automatic locking system, flexible rubber seals and limited metal-on-metal contact reduce noise and road vibrations. LOMAX™ Professional Series are hard truck box covers with long term reliability.

Automatic Dual Locking System

Automatic Dual Locking System

Release both locks simultaneously by pulling the cord from either side. Heavy duty nylon latches provide 1/2 in. surface for solid positive engagement.

Automatic Ten Point Locking System

Automatic Ten Point Locking System

Unfolding each panel locks the cover automatically at ten points with heavy duty reinforced nylon components.

Weather Tight Tonneau Seal

Weathertight Seal

Water shedding design and waterproof hinges direct water away from the box without drains or gutters. The hard tri-fold cover overlaps the box rails with a continuous seal down the entire length of the side rails, preventing dirt, snow, rain and dust from entering the pickup bed.

Incorporated Storage Clips

Incorporated Storage Clips

Sleek, retractable storage clips hold truck bed cover in place and rigid standoffs with vinyl caps keep panels appropriately spaced in the folded position. No adjustments needed.

Strong Tonneau Cover

Strong, Yet Light in Weight

LOMAX™ Professional Series includes additional aluminum channels under each panel. The extruded aluminum channels support the panels to hold up to 500 pounds of evenly dispersed weight, while weighing approximately 60 pounds for an impressive strength-to-weight ratio.

Simple Tonneau Removal

Simple to Remove and Reinstall

With cover open and storage clips fastened, on front panel pull latches and disengage hooks by sliding cover back, then lift for removal. To reinstall, engage hooks by sliding the tonneau cover forward and place into retainment brackets. Cover locks automatically in place.

Tight Bite Clamps

TIGHT BITE™ Clamps

Installs in minutes without the need to drill into your truck box. Specifically cut 'teeth' maintain superior grip and exceptional strength.

Average Customer Rating: star star star star star (8 customer reviews)

Review by: Scott D. - OH   star star star star star

If you're looking for a great low profile truck box cover that looks awesome, this is it. When needed it can be removed very easily as compared to a retractable that even when rolled away takes up bed space. Fit perfect on my 2017 Ford F-150 with 5.5ft bed.

Review by: Clark B. - MN   star star star star star

The diamond plated tri-fold cover was easy to install and looks great.

Review by: Nick J. - NY   star star star star star

This hard tri-fold tonneau cover was everything as advertised. Installation was a breeze and since installed, we have had rain and everything in the truck box has stayed dry. I have already recommended it to my friends.

Review by: Raymond S. - OK   star star star star star

LOMAX™ Professional Series Cover Customer Review Package arrived quickly and in great shape. The parts were packaged well, so that all the parts were in perfect condition. Installation was relatively easy, although the clamps were a bit fiddly. Having a helper would have made the installation easier, but it wasn't too bad to do it by myself. The cover looks great and fits on my Chev. Silverado CC SB Z71 perfectly. It isn't perfectly water-tight against rain, but very close! I like being able to open close the tailgate without worrying about the position of the rear of the cover. I also like the ability to remove the cover completely with minimal effort.

Review by: Rich M. - NV   star star star star star

Installation of LOMAX Professional Series was a breeze, get many complements on the tonneau cover. Has kept the box and contents dry. Not cheap, but if you need box access quickly and yet secure when closed, this unit is perfect.

Review by: Travis N. - WI   star star star star star

Lomax Professional Series works great. Easy to install. Wish it came in black though. There was no option for color when I purchased it. Shipping was very fast as well.

Review by: Matt S. - SC   star star star star star

Lomax Professional Series cover fits perfect on my truck and looks great.

Review by: Jerry M. - IL   star star star star star

Love it. The Lomax Professional Series tonneau cover is extremely well built and solid. Installation is simple and does not require an additional pair of hands to complete. Even after driving all day in the rain, the truck bed stayed nice and dry.