Design: The iMBAPrice IMBA-8141F-BK5 black is a smooth mounting block designed to provide a secure and attractive way to mount light fixtures and other accessories on exterior surfaces. This particular model often features a built-in box, which helps to provide extra support and stability for light fixtures. Material: It's typically made of UV-rated plastic, which is durable and resistant to weather conditions. Available in Black or White color, but it can be painted to match the exterior color of your home if needed. One Piece Design: Simplifies installation and ensures a secure and clean fit on vertical siding. Features a 6.8 cubic inch box, providing ample space for wiring and ensuring compliance with electrical codes. Includes a 1-inch J-channel to accommodate the siding and create a seamless look. Compatibility & Usage: It is compatible with various types of siding, including vinyl, wood, and others. This makes it a versatile choice for different installation needs. Ideal for mounting light fixtures, house numbers, doorbells, and other exterior accessories. Installs before or after siding is installed Technical Description: Surface Mounting; Material Plastic; Capacity 6.8 Cu Inch; Size 6.652 Inch W X 1.126 Inch D X 6.652 Inch H. Fixture Mounting Canopy Siding Mounting Block. One Piece Design. Built In 6.8 Cubic Inch Box. 1" J-Channel. 1x NM Cable Connector Included. iMBAPrice Non-Metallic IMBA-8141F-BK5 Value Pack of 5, Black Color Siding Mounting block with built-in electrical box for smooth vertical mounting of light fixtures on all siding types. You may find the siding mounting block is very easy to install, whether you have siding up or not. For a more complete job, you may also paint the fixture to finish with your desired colors. This product is a one-piece design. The back flange mounts to the substrate with screws. There is a channel formed between the back flange and face, the same concept as J- channel. If your siding will slide into the channel and the channel is wide enough to accommodate the lap.