GMC 3500 Tonneau Cover - Access - LOMAX Pro Series Hard Tri-Fold - Black Diamond - `20-`27
GMC 3500 Tonneau Cover - Access - LOMAX Pro Series Hard Tri-Fold - Black Diamond - `20-`27
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GMC 3500 Tonneau Cover – Access LOMAX Pro Series Hard Tri-Fold – Black Diamond (2020–2027). A rugged, low-profile hard folding cover engineered for secure, everyday use on your Sierra 3500 HD.
Built in the USA with aluminum diamond plate and a durable Black Diamond finish, the LOMAX Pro Series adds confident bed security without bulk. The tri-fold layout opens quickly for bed access, and its water-shedding profile helps keep weather off your gear. Extruded aluminum channels add strength, while the split-rail design makes removal and reinstallation straightforward when your workflow demands it.
Features
- Hard tri-fold aluminum panels with Black Diamond finish
- Low-profile, water-shedding design
- Split-rail system for easy removal and reinstall
- Fits 2020–2027 GMC Sierra 3500 HD, 6' 8" bed, w/o bedside storage boxes
Have questions or want to confirm fitment for your build? Call us at 512-982-9393 (TX) or 562-981-6800 (CA). We offer professional installation and customization at our Austin, Texas and Los Angeles, California area locations.
Thinking about multiple items? Contact us for potential shipping discounts.
We install on premises at both locations.
CA Residents: 
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Need Assistance?
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Call us at 512-982-9393 (Austin, TX) or
562-981-6800 (Signal Hill, CA)
and get assistance from one of our sales team members!
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