SECURESHELL™: All aluminum powder coated pickup bed topper. Aluminum thickness .090" to .125". All hardware is stainless steel. Easily installed with Pocket Loks™ on most models. Available in 24" or 30" Model. The 24" model is 24" in height from the bed rail, with flip up doors on the street and and curb sides, has windows at both cab end and in rear flip up door. The 30 " model is 30" in height from the bed rail, with flip up doors on the street and and curb sides, and a 36" wide walk through door. Street and curb side doors can be ordered with or without windows. All mounting hardware included. Single rear doors, windows, side doors, and all other variations sold separately. All SecureShells™ are stocked for current model year only. SecureShells™ require assembly, and are shipped knocked down in five major pieces. Shells can be ordered pre-assembled but would have added cost of assembly and shipping crate. Shipped by motor freight only. Call for specific weights and installation times.