The Specialty Recreation Skylight is a replacement thermo-formed polycarbonate neo angle skylight with a 20" x 8" hole size. Perfect for replacing existing neo angle skylights on class A, B, and C motor homes, travel trailers, fifth wheels, pop-ups, campers, and RVs.• Constructed of high-quality thermo-formed polycarbonate for durability• Smooth, glossed design makes it easy to clean• No metal flanges• Fast and easy installation• Includes 10-oz. tube of elastomeric sealant• Hole Dimensions: 20" long side x 8" short side• Flange Dimensions: 24" long side x 11" short side• Bubble Height: about 5" Smooth, glossed design makes it easy to clean Fast & easy installation Includes 10-oz. tube of elastomeric sealant | Specialty Recreation Inc Specialty Recreation Neo Angle RV Skylight, 20" x 8", White