ATC LHR Mid-Rise Truck Cap
Our LHR mid-rise truck cap delivers aluminum durability with a lower profile that preserves fuel economy and maneuverability. The all-aluminum frame and skin resist rust and corrosion for years of daily use, while the mid-rise roofline maintains clearance in standard garages and parking structures.
Full weatherstripping around all door frames keeps rain, snow, and road dust out of your cargo area. The rear door opens with an automotive-style locking handle, and optional side glass panels let you monitor cargo without climbing into the bed. Factory paint-matched finishes ensure the cap integrates seamlessly with your truck’s factory color.
Construction & weatherproofing highlights
Aluminum construction & corrosion resistance
The LHR uses an all-aluminum frame with welded corner joints and extruded roof supports. No wood substructure means the cap won’t absorb moisture, swell, or develop soft spots over time.
Aluminum skin panels are bonded and riveted to the frame with aircraft-grade fasteners. The same construction methods ATC applies to their commercial-grade truck caps carry over to the LHR, giving you a shell that holds up to years of UV exposure and road salt without surface corrosion. We apply a multi-stage powder coat finish before paint to ensure adhesion and prevent chipping at door edges.
Mid-rise roofline dimensions & clearance
The mid-rise profile sits lower than full-height caps, typically adding 21 to 24 inches of interior height above the bed floor depending on your truck model. This keeps overall vehicle height under eight feet, which fits most residential garage door openings and covered parking structures.
The sloped roofline directs airflow over the rear door seam to reduce wind noise at highway speeds. Internal headroom allows you to store stacked bins, tool chests, and vertical cargo racks without needing a taller profile that impacts fuel economy.
Weatherproofing & door seals
Full-perimeter bulb seals
We run continuous EPDM rubber bulb seals around every door frame and the base mounting rails. The rear barn doors compress against these seals when latched, creating a watertight barrier that holds up through car washes and highway rain.
Integrated drainage channels
Molded channels along the inside of the side rails direct any water that enters through door gaps toward drain holes at the rear corners. This prevents pooling inside the cap and keeps moisture away from cargo areas during heavy downpours.
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Common questions about the LHR mid-rise cap
The LHR is available for full-size Ford F-150, Chevy Silverado, GMC Sierra, Ram 1500/2500/3500, and Toyota Tundra models. We manufacture truck-specific versions for 5.5-foot, 6.5-foot, and 8-foot bed lengths. Each cap includes mounting hardware designed for your specific truck make, model, and bed configuration.
Mid-size truck owners should review the ATC Colorado or Tacoma-specific models, as the LHR is engineered for full-size bed rail dimensions.
Interior height ranges from 21 to 24 inches above the truck bed floor, depending on your specific truck model and bed rail height. This measurement gives you enough clearance for tool chests, stacked storage bins, and vertical divider racks without the added wind resistance of a full walk-in height cap.
The sloped roofline design maintains headroom throughout the interior while keeping overall vehicle height under eight feet for standard garage clearance.
The all-aluminum construction keeps the cap light enough for one person to lift off with proper technique, though we recommend two people for safety. The clamp-on mounting system releases without tools — you simply loosen the wing nuts on each C-channel clamp and lift the cap straight up.
The cap weighs approximately 120 to 160 pounds depending on bed length and glass options, so plan your removal process with clearance space and a safe storage location.
Yes, we offer factory paint matching for most OEM truck colors. You provide your truck’s paint code at the time of order, and we apply a color-matched finish to the cap before shipping. The multi-stage paint process includes powder coat primer, base coat, and clear coat for UV protection and long-term color retention.
Custom paint matching typically adds one to two weeks to the production timeline compared to standard white or black finishes.
ATC covers the LHR with a three-year limited warranty on the aluminum frame, skin panels, and weatherstripping. The warranty covers defects in materials and workmanship but excludes damage from accidents, improper installation, or modifications.
Locking hardware, gas struts, and door hinges carry a one-year warranty. Paint finish is warranted for one year against peeling, cracking, or delamination under normal use.
The LHR roof is reinforced with extruded aluminum crossbars that accept most aftermarket roof racks and ladder racks. The roof structure is rated for up to 300 pounds of evenly distributed static weight, which accommodates kayaks, canoes, lumber racks, and commercial ladder systems.
We recommend mounting racks to the factory roof crossbar locations to ensure load distribution across the strongest points of the frame. Some installers drill additional mounting points, but this may affect the weatherproof seal warranty.
The mid-rise profile creates more wind resistance than a low-profile tonneau cover, which typically results in a 1 to 2 MPG reduction in highway fuel economy depending on driving speed and conditions. The sloped roofline minimizes drag compared to full-height caps, so the LHR sits between a tonneau and a walk-in cap in terms of aerodynamic efficiency.
Drivers who prioritize secure cargo storage and weatherproofing often accept the slight fuel economy trade-off for the added security and protection the LHR provides.