Improve Driving Experience: Truck racks with c-shape tube are aerodynamic that will reduce wind noise at highway speed. Also we provide rubber strips that you can mount them on the crossbar channels to reduce wind noise further

Universal Fit: This roof rack fits flat roof/bare roof camper shells and truck toppers without factory rails. Not fit vehicles that have factory roof racks or rounded roofs. Please measure roof width before purchasing and checking our fitment guide for details

Drilling Needed: Before mounting truck topper racks, you need to drill holes on your flat roof. We provide necessory mounting hardware and installation manual for you to install camper shell roof rack, easy to assemble( (typically in 45 minutes)

Made to Last: Truck cap roof rack is made of reinforced aluminum for strength and corrosion resistance. Support up to 500 lbs when properly installed (capacity depends on your truck cap structure and mounting surface)

Expand Usage Space: Roof rack cross bars are designed with t-slot channels, you can install various cargo via t-screws (Not Provide!), such as bike, kayak, roof-top tent, etc. Increase your storage space and make your vehicle organized

Instant Assistance: For any questions about compatibility, installation, or product issues, please contact our support team for assistance

Product Information: 2pcs 60" pickup topper ladder racks, 4pcs 3.3" steel mounting base( 3mm thick). And height clearance is 5.25"