| Specification | Details |
|---|---|
| Product Type | Hard Quad Fold Tonneau Covers |
| Series / Model | Guardrox L6 |
| Compatible Model | Sierra 1500 (2019-2026) |
| Bed Length | 5.8 FT (Actual: 69.3") |
| Compatibility Notes | Fits trucks with or without factory utility track system |
| Main Material | Aircraft-grade aluminum alloy |
| Weather Seal | Full-Perimeter EPDM Weather Stripping |
| Load Capacity | 400 lbs (evenly distributed, e.g., snow) |
| Weather Protection | Advanced |
| UV Protection | Anti-UV Powder Coating |
| Packing Dimensions | 68.1" x 25.6" x 5.9" |
| Packing Weight | 58.8 lbs |
| Item | Quantity |
|---|---|
| Tonneau Cover | *1 |
| Rail | *2 |
| Buckle | *2 |
| Buckle Screw | *6 |
| Bulkhead Seal | *1 |
| Anti-tilt Shim | *4 |
| Clamps | *6 |
| Cover Retainer | *1 |
| Anti-tilt Bracket | *1 |
| Socket Set Screws | *4 |
| Square Head Bolt Group | *2 |
| Hexagonal Wrench | *3 (2.5mm*1 + 3mm*1 + 5mm*1) |
| Waterproof Rubber Plasticine | *2 |
We currently ship only to the contiguous United States (including Washington, D.C.). We do NOT ship to:
- Alaska and Hawaii
- U.S. territories and protectorates
- PO Boxes, APO/FPO addresses
- Military bases and island locations
We currently ship all orders via FedEx as our default carrier. After your order is shipped, estimated delivery time is 2–5 business days within the contiguous United States. View Shipping & Delivery page for more information.
- Soft tonneau covers: 2 years
- Hard tonneau covers: 3 years
- Performance series covers: 5 years
View our Warranty page for more information.
Guardrox L6 Hard Quad-Fold Tonneau Cover for GMC Sierra 1500, 2019-2026 (5.8 ft Bed)
Aerospace-grade aluminum
Exceptional strength, Low weight
Lockable & Theft-Resistant
Hard panels lock tight with your tailgate
Bone-Dry in Any Weather
Full-perimeter sealing strips block rain, snow
No Drilling. No Damage.
Clamps on within 30 minutes with included hardware
The Guardrox L6 hard quad-fold tonneau cover keeps your GMC Sierra 1500's bed secure, dry, and looking factory-clean. Four low-profile hard panels fold flush against the cab for full bed access —— precision-fit for 2019-2026 GMC Sierra 1500 with a 5.8 ft bed, clamps on in 30 minutes, no drilling. Backed by our 3-year warranty and free US shipping.
Couldn't load pickup availability
Why Choose Guardrox?
U.S. Patents
U.S. Truck Owners Served in 2026
Average Customer Rating
GUARDROX L6 Hard Quad-Fold Tonneau Cover
Before VS. After
Swipe to See L6 Tonneau Cover on Sierra 1500 Closed and Open
FLIP UP, LOAD UP
Panels fold up and strap flat against the cab — no removing, no hauling it to the garage. Full bed access in seconds, whenever the cargo gets big.
ONE PULL, YOU'RE IN
The quick-release latch pops open with a single tug — one hand, no fumbling. Drop the panel back down and it clicks shut on its own, locked tight.
BUILT TO HOLD TIGHT
Heavy-duty clamps bite down on your bed rails — no drilling, no shifting, no rattling. Even on washboard roads, it stays locked in place.
PANELS THAT TAKE A BEATING
Rigid hard panels shrug off dents, scratches, and harsh sun — and they keep prying hands out, too.
Enjoy Easy&Effortless Operation with l6
Overlanding
Gear up and go further. Dust, mud, and miles of rough trail — your equipment stays sealed, dry, and exactly where you packed it.
Family Trip
Luggage, strollers, coolers — pack it all, lock it all. Rain or shine, the whole family's cargo arrives safe and dry.
Commuting
Groceries, gym bags, work gear — out of sight, out of the weather. Your bed stays clean and your day stays simple.
Product Comparison
Guardrox LX5 and L5, which model fits your truck?
Guardrox L6 Hard Quad-Fold Tonneau Cover for GMC Sierra 1500, 2019-2026 (5.8 ft Bed)
Guardrox L5 Hard Tri-Fold Tonneau Cover for GMC Sierra 1500, 2019-2026 (5.8 ft Bed)
Frequently Asked Questions
How do I check if this product fits my vehicle?
Verify your vehicle year, make, model, and specific bed length in the product specifications tab. If you are unsure, reach out to our support team with your VIN.
Is installation easy to do at home?
Yes! Most Guardrox items feature clamp-on installation with standard hand tools, requiring no drilling or vehicle modification. Installation typically takes 20 to 30 minutes. We recommend you to watch our installation video for easy and quick steps.
Is this product waterproof and weather-resistant?
Engineered with perimeter weather seals and heavy-duty materials, Guardrox LX5 effectively channel water away and protect cargo against rain, snow, and UV rays.
What warranty is included?
We provide 3-year warranty for L6 series. In the rare event of a defect, our support team will promptly assist with replacement parts.
What are your shipping and delivery times?
Orders are dispatched within 1-2 business days from our fulfillment centers. Standard delivery across the contiguous US arrives in 2-5 business days.