The CertainTeed Perimeter Triple 3 1/3 inches Solid Vinyl Soffit is an exterior accent that provides a smooth, flat surface and creates the perfect balance of aesthetic and performance. This soffit vent can also be used as vertical siding and is ideal in new construction for single family homes, multi-housing projects, re-model applications, and light commercial developments. It also uses nails with 12in. on center being the faster spacing requirements. Produced using PVC resin, CertainTeed Preimiter Solid Vinyl Soffit is designed to provide a beautiful finishing touch for porch ceilings and soffit areas, as well as add a distinctive touch with vertical siding applications.