Made of glass-filled polypropylene, a UV- stable material which prevents any scratches Low thermal expansion and contraction Includes a 1.5 in. border which delivers a picture frame look and can be installed either horizontally or vertically Heavy-duty 0.3 in. thickness Easy to install using color matching fastener kits for a seamless finish (sold separately) Coordinating 2 ft. x 4 ft. Frame Kit (model # 73040779) Not compatible with lattice cap or divider moldings Limited Lifetime Warranty