ACCESS® LoMax 2015-2019 GMC Sierra 2500/3500 6'6" Hard Tri-Fold Tonneau Cover B1020039

ACCESS® LoMax 2015-2019 GMC Sierra 2500/3500 6'6" Hard Tri-Fold Tonneau Cover B1020039

Regular price $1,400.20
$1,400.20 Sale price Regular price $1,820.26

Cover Action: Folding

Cover Firmness: Hard

Color: Black

Weight: 69 lbs.

Dimension (L x W x H): 72 x 36 x 8 in.

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Product Details

ACCESS® LoMax Hard Tri-Fold Tonneau Cover B1020039


  • Panels made of lightweight but heavy duty aluminum alloy
  • Integrated Storage Clips (retractable storage clips hold tonneau cover secure, vinyl capped standoffs keep panels properly spaced when folded).
  • Matte black finish matches OEM bed caps of most new trucks
  • Weather-tight seal around perimeter of cover
  • Profile of cover is less than 1/2″
  • Supports 400 lbs of evenly distributed
  • Each panel locks into the rails for security
  • No drilling required for installation
  • 3 year manufacturer warranty
  • Made in the USA


Experience the ultimate utility and aesthetic appeal for your truck with LOMAX® Folding Hard Covers. These covers boast an ultra-low profile design, coupled with waterproof hinges and durable panels, ensuring a perfect blend of strength, style, and security. Designed to be lightweight, they can be effortlessly installed, operated, and removed by a single person.

The LOMAX® Folding Hard Cover is available in various finishes, allowing you to choose the one that complements your truck and personal preference. With extruded aluminum channels providing additional support, this hard tonneau cover remains rigid and strong enough to handle up to 400 lbs of weight. Keep your cargo discreet and protected with the automatic latching system, or open the cover to accommodate larger items.

With LOMAX® Folding Hard Covers, there's no need to compromise—enjoy the best of both worlds.

Price Guarantee

Lowest Price Guarantee

We work hard to ensure that the prices of our aftermarket truck bumpers are the best available online. That’s why we guarantee that you’ll get the lowest price on all of our bumpers and accessories. Here’s how it works:

  • We guarantee that the price of our aftermarket truck bumpers is the best available online. If you find an online store that offers a specific model at a lower price, let us know and we’ll match their price for your purchase.
  • If you find that the exact bumper at an even lower price online within 6 months after your purchase, we will refund you the difference. Simply send a price difference refund request to This applies even to the prices from our own store at
  • The competitor must be an online retailer with no physical stores and they must be an authorized dealer of the bumpers or accessories in question. The competing online store must also have the product in stock on their website for our price match guarantee to apply.
  • The price match guarantee does not apply to online marketplaces such as Amazon, eBay, Overstock or any other similar websites. The competitor must be selling the item directly on their own online store.
  • Additional promos cannot be applied in addition to the price match guarantee. For example, the free gift promo cannot be added on top of the price match guarantee. Only one promotion can be applied per purchase.

Once we confirm that your order is eligible for our price match guarantee, you can be confident that you’re getting the very best deal online.

Whether you’re looking for heavy-duty truck bumpers by Ranch Hand, a winch bumper by Fab Fours, or any other aftermarket truck bumper, if you shop with BumperOnly, you’ll never have to worry about buyer’s remorse.

For any questions about our price match guarantee, feel free to get in touch.

Shop without fear. Let BumperOnly take care of the rest.


      Installation Guide
      Access Bed Covers comes complete with installation instruction. If you need assistance, call Access Bed Covers Products Technical Support or bring it to your local auto body shop to install.

      Please click here to download installation manual.

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