Sits on Truck Rails : No. WARNING CA Proposition 65: Yes. Durable Solid Core Panels w/Aluminum Skins.Drive With Cover In Closed/Folded Or Flipped Up Position. 100 Percent Truck Bed Access. Premium UV Resistance-Will Not Fade Or Chalk. Third Brake Light Visibility For Short And Standard Bed Only. Weight Rated Up To 300lbs Of Evenly Distributed Weight. The BAKFlip G2 hard folding truck bed cover is the smartest investment when your job calls for a cover that offers full bed access when you need it, and maximum theft protection when you don't. The all-new integrated buckle system allows you to drive with your co. This item is in the category "Automotive\Parts & Accessories\Car & Truck Parts & Accessories\Exterior Parts & Accessories\Truck Beds & Parts\Truck Bed Accessories". The seller is "partsterr_canada" and is located in this country: CA. This item can be shipped to North, South, or Latin America, all countries in Europe.