Perfect sizing: This siding mounting block is specifically designed for 1/2inch lap siding with a 4-inch overlap, ensuring a snug fit. Easy installation: The vinyl siding light mounting block is simple and quick setup, saving time and effort. High quality: Your outdoor light mounting block is made from High-quality materials, with a textured, paintable surface. Versatile Use: Siding mounting kit can mounts various fixtures on different siding types, for T-111, for HardiePlank Lap Siding. Competitive Edge: Mounting blocks for exterior lights are of superior quality with a textured, paintable white finish, ideal for 1/2 inch lap siding. Note:Caulk can be used for a custom fit around the top of the mounting kit if necessary. Please note:the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! Colour:White Material:ABS Package Contents: 4 x Mounting Block with Electrical Box 4 x Cable Connectors 16 x Screws