LOMAX® Professional Series

Rugged Hard Tri-Fold Tonneau Cover

The LOMAX® Professional Series is anything but ordinary. A low profile design and superior protection redefine industrial versatility. Additional extruded aluminum channels increase the durability of each coated diamond plate panel, making LOMAX® Professional Series stronger with minimum added weight. Protect your gear with an automatic latching system while weathertight seals, durable hinges and a water-shedding design ensure your truck box remains dry without the need for gutters and drains. Complement your pickup with this unique hard tonneau cover and watch heads turn. One person can easily install, operate and remove this hard tri-fold cover. All the capabilities you need and expect, LOMAX® Professional Series is redefining rugged.

California Residents: Prop 65 Warning


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


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

Tonneau Side Sealing


The water shedding design and waterproof hinges direct water away from the pickup box, no gutters or drains needed. The aluminum tri-fold tonneau overlaps the box rails with a continuous seal down the full length of the side rails, preventing elements from entering the pickup box.

Aluminum Channel


The LOMAX® Professional Series features additional aluminum channels under each panel. Extruded aluminum channels reinforce the panels to support up to 500 pounds of evenly dispersed weight, while weighing approximately 60 pounds for a high strength-to-weight ratio.

  • Storage Clip
  • Storage Clip


Retractable storage clips secure the truck bed cover and vinyl capped, rigid standoffs keep panels appropriately spaced in the folded position. No adjustments required.

Tight Bite Clamps


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

Removing Hard Tonneau Cover


With tonneau cover open and storage clips secured, pull latches on front panel and disengage hooks by sliding cover back; lift to remove. Reinstall by sliding cover forward to engage hooks, then lower to automatically lock in retainment brackets.


Maximum strength, added security and a sleek design, this is the LOMAX® Professional Series. Watch us put this tough tonneau cover to the test with at least 400 lbs. of snow (please don’t replicate). See how this new kind of low profile hard cover opens and closes in seconds and can be easily removed or reinstalled to keep up with your active lifestyle. This secure tonneau cover sits low and protects your truck bed to the max.

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Lomax Pro 5 star ratingBy Mike B. - WI

" Luv my new LOMAX Pro hard folding tonneau cover! Fits like a glove. Easy to install and tuff as nails. The Black Diamond finish looks killer on my Tacoma truck. Highly recommend. PS their customer service was top notch start to finish. "

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Lomax Pro 5 star ratingBy Billy K. - IA

" Very nice I took my time installing the LOMAX professional hard cover. The instructions was easy and the U tube video were very detailed. The material looked strong and everything locked into place the first time, no adjustments was needed. You build a great product and please thank very one that helped. I will try to take care of this great cover. Iowa winter will be the first test. "

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Lomax Pro 5 star ratingBy Robert B. - TX

" I researched allot of covers out there. My criteria was QUALITY and LONGEVITY, this cover exceeded both. I've owned several covers before and they all had there downfalls. Aluminum is the only way to go, it installed problem free (25 minutes by my self) and can be removed easily. Also, I did not have any water in the bed after a wash. Save yourself time and buy it, yes it is higher priced but that's because of the quality. I have had mine for 8 months and am very satisfied. "

Lomax Pro 5 star ratingBy GLEN P. - MD

" Excellent quality. Looks great, easy to install and does not leak. "

Lomax Pro 4 star ratingBy John S. - FL

" Great product easy to install! "

Lomax Pro 5 star ratingBy Jim - WI

" Great cover pro series worth the price, way beefier than the cheaper model, I have had both "

Lomax Pro 5 star ratingBy Randy B. - MO

" First and Best Investment made on new 2023 GMC Canyon. Easy install, quick delivery, and quality all the way. Only minimal seepage after multiple car wash and heavy thunderstorms. ACI customer service is great. Love the look, compliments and inquiries from other truck owners. Adarac is next, and worth the wait. What a pleasure to buy Made in USA products. "

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Lomax Pro 5 star ratingBy Hayden G. - NC

" a very nice hard fold cover that is very strong. so far no leaks even when pressure washing "

Lomax Pro 4 star ratingBy Josh P. - RI

" LOMAX Professional Series fits my 2019 Ram 1500 perfectly. The seals on the tonneau cover does a great job; only a few drips entered the bed on the corners after an all-day rainstorm. Very minor. Only issue I need to look out for is the seal under each fold. (Reviews from buyers indicated that they are prone to breakdown; can't be sure as the reviews also stated a newer version of the seal has been applied to the covers). I am hoping this doesn't happen as the cover looks to be great quality despite the fact spending a lot of money on it compared to their competitor's covers. Time will tell. Overall, as of having for 1 week, I do recommend the cover for everyday use. "

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Lomax Pro 5 star ratingBy Barry G. - MO

" 2023 Colorado Z71. Installation was extremely easy and required no adjustments to the rail. 3 position choices: fully covered, 1/3 covered and secured and removed. The cover is light enough to completely remove by myself. Low profile looks great and does not cover bed stake holes. Line X finish matches my bed and should provide a durable non-slip finish for loading 4x8 sheet products on top of. Installed bed mat and additional tailgate gasket. No evidence of water infiltration. Very happy with communication with customer service and the product. "

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