This Rack Kit is for truck canopies/camper shells/caps and trailers that have roof top sizes no larger than approximately 1475mm/58.1'' (W) x 2166mm/85.3'' (L). The Slimline II Tray and eight (8) supplied Feet mount onto the OEM/Factory installed track of your canopy/shell or trailer.NOTE: Additional fasteners may be required to fit OEM/Factory supplied tracks.All Front Runner Rack Kits contain installation instructions as well as all the components needed to mount the Slimline II Tray to your vehicle.In order for Front Runner Feet and supplied hardware to work with your OEM/Factory supplied canopy track, the track must have: Slot base width min 20mm / max 25mm Slot base height min 6.5mm / max 10mm Slot opening width min 8.5mm / max 10.5mm Slot opening height min 2mm / max 5mm **Please check with canopy manufacturer regarding the load ratings for your specific canopy and track.All Front Runner Dometic racks are backed by a 5‑year warranty* * Note: A maximum driving speed of 130km/80mi per hour should be adhered to, when equipped with a Front Runner Roof Rack or Load Bar kit.