Indestructible injection molded plastic frame is totally weatherproof to the elements. High compression, high density, polyurethane foam padding is covered with moisture barrier. Marine grade 26oz. vinyl is loaded with plenty of mildew and UV inhibitors. Vinyl is sewn with Dacron polyester thread with OEM standards to last years. Stainless Steel staples. T-Nut construction to mount on any 4-bolt BIA standard mounting system. Mounting bolts included. 6 year frame and 3 year upholstery warranty. Dimensions: HT 5.5” – WD 15.5” – DP 11”