This option is recommended when dropping cage height to allow for extra visibility. The R*S*K Vision Roof (8") or Sun Roof (16") is made with tinted, shatterproof Poly-carbonate and is installed with waterproof gasket. The vision roof/ sun roof adds extra visibility to eliminate having crank your neck to see where you're going, especially in the bowls of dunes or going up/ down hills. Built to the proper width for each roof for maximum visibility. *Please note: Only available for RSK cages.