Lomax 590 Aluminum Tonneau Cover – Hard Folding Truck Bed Protection
Our 590 aluminum tonneau cover represents the pinnacle of hard folding truck bed protection. Engineered with aerospace-grade aluminum panels and a tri-fold design, the 590 delivers unmatched security without sacrificing bed access. We built this cover for truck owners who demand industrial-grade strength in a sleek, low-profile package.
The 590 sits just one inch above your bed rails when closed, preserving your truck’s aerodynamic profile while supporting up to 500 pounds of evenly distributed weight. Whether you’re securing tools at the job site or protecting cargo during highway travel, our patented hinge system allows effortless operation with one hand. The matte black powder-coated finish resists corrosion in any climate, and the integrated drain channels keep moisture away from your valuables. We designed the 590 to install in under 30 minutes with zero drilling required—just clamp and go.
What makes the 590 different
Aluminum Construction & Load Engineering
We manufacture the 590 aluminum tonneau cover using military-spec 6061-T6 aluminum alloy—the same material trusted in aircraft construction. Each of the three panels features dual-wall construction with internal ribbing that distributes weight across the entire surface. This engineering allows the 590 to handle snow loads, rooftop cargo carriers, and even camping gear without flexing or warping.
The matte black powder-coat finish undergoes a multi-stage curing process that bonds molecularly to the aluminum substrate. This creates a protective barrier against road salt, UV radiation, and chemical exposure that outlasts traditional paint by years. We’ve tested the 590 in Arizona heat exceeding 120°F and Canadian winters below -30°F—the finish maintains its integrity and the panels remain dimensionally stable. Our hard folding cover collection uses this same aluminum alloy platform across all models, ensuring consistent quality and performance.
Tri-Fold Design & Bed Access Flexibility
Full Bed Access in Seconds
The 590’s tri-fold configuration gives you multiple bed access options that adapt to your cargo needs. Unfold the rear panel for tailgate access to smaller items. Open two panels for mid-bed loading of longer materials like lumber or ladders. Flip all three panels forward and they rest securely against your cab, providing 100% bed access for hauling ATVs, appliances, or oversized equipment.
Our proprietary hinge system uses stainless steel pins and self-lubricating polymer bushings that eliminate squeaks and binding. You’ll never need to apply grease or perform maintenance on these pivot points. The hinges lock automatically in the open position, so panels won’t slam shut while you’re loading. When you’re ready to close the cover, a gentle pull releases the lock and the gas-assist struts guide each panel down smoothly. This is the same mechanism we use across our complete tri-fold tonneau line, refined through years of real-world testing.
Weather Sealing & Water Management
Every seam on the 590 features dual-durometer EPDM rubber seals that compress against your bed rails and between panels. These seals create a weather barrier that keeps 99% of moisture out during rain, car washes, and highway spray. We engineered integrated drainage channels along each panel edge that capture any incidental water and route it safely out through designated exit points—never pooling inside your bed.
The automatic tension adjusters maintain consistent seal pressure as temperatures fluctuate and the rubber compresses over time. You can fine-tune the fit using the tool-free adjustment knobs located at each clamp position. This ensures your 590 maintains its weatherproof seal whether you’re parked in Death Valley or driving through a Montana blizzard. For enhanced protection of sensitive electronics or documents, pair the 590 with our premium bed liner systems for a complete moisture barrier solution.
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Common Questions About the 590 Aluminum Hard Folding Cover
The 590 supports up to 500 pounds of evenly distributed weight when closed and locked in position. This load capacity allows you to safely transport rooftop cargo carriers, camping gear, or snow accumulation without damaging the panels. The aerospace-grade aluminum construction and reinforced internal ribbing distribute weight across the entire surface. We recommend avoiding point loads or concentrating weight in a single area—spread cargo evenly across all three panels for optimal performance and longevity.
Yes, the 590’s Universal Clamp Technology adapts to most factory stake pockets, aftermarket bed rail systems, and spray-in bed liners. The adjustable clamps feature indexed slots that accommodate variations in bed rail height and width. Each clamp includes rubber protective pads that won’t scratch your bed finish or liner surface. If you have a specialty bed configuration, lifted truck, or non-standard rails, contact our fitment team with your truck year, make, model, and bed length—we’ll verify compatibility and recommend any necessary adapter kits before you order.
Absolutely. We engineered the 590’s patented hinge system specifically for single-hand operation. The gas-assist struts balance each panel’s weight, so you can lift or lower sections with minimal effort using one hand while holding cargo with the other. The hinges lock automatically when panels are fully open, preventing them from slamming shut while you load your truck bed. To close, simply pull the release tab and guide the panel down—the struts control the descent speed for smooth, controlled closing every time.
No drilling required. The 590 installs completely using clamp-on mounting that attaches to your existing bed rails or stake pockets. This no-drill design preserves your truck’s resale value and allows you to remove the cover entirely in 10-15 minutes when you need full bed height for tall cargo. The eight mounting clamps distribute clamping force evenly around the bed perimeter, creating a secure attachment that won’t shift during highway driving or off-road use. You’ll need basic hand tools—no power tools or permanent modifications to your vehicle.
The 590 features dual-durometer EPDM rubber seals at every panel edge and along the bed rail contact points that block 99% of water intrusion. Integrated drainage channels capture any incidental moisture that might enter during extreme weather or high-pressure car washes, routing it out through designated exit points away from your cargo. The automatic tension adjusters maintain consistent seal compression as temperatures change, ensuring weatherproof protection year-round. For absolute moisture protection of electronics or sensitive materials, we recommend combining the 590 with a bed liner for a complete sealed environment.
Your 590 system includes three pre-assembled aluminum panels, eight Universal Clamp assemblies with all mounting hardware, complete weatherstripping and seal kits, tension adjustment tools, illustrated installation instructions, and a protective storage bag. Most customers complete installation in 20-30 minutes using basic hand tools. The process involves positioning the panels on your bed rails, attaching the clamps at marked locations, connecting the hinge assemblies, and adjusting the tension for proper seal compression. No special skills or automotive experience required—just follow the step-by-step guide and you’ll be securing your truck bed the same afternoon.
Yes. The 590 comes standard with a rotary latch at the tailgate that integrates with your factory truck lock or accepts a keyed cylinder. For enhanced security, we offer a Premium Lock Kit upgrade that adds keyed cylinders at all three panel connection points—creating multiple lockout barriers that deter theft. The hardened aluminum construction resists cutting tools and pry attacks far better than soft covers. When locked, internal steel hooks grip your bed rails at multiple points, making forced entry extremely difficult without causing obvious damage to the cover or truck bed.