eBay

The "iMBAPrice 8141-1 Vertical Siding Lamp Octagon Mounting Kit with Built-in Box for 1/2 Inch (0.5") Outdoor Vertical Siding LAP" appears to be a product designed for mounting outdoor lighting fixtures on vertical siding. Design: It is designed as an octagon-shaped mounting kit with a built-in box. This design is commonly used for outdoor lighting installations.
Functionality: The built-in box is likely designed to house the electrical connections and wiring associated with the outdoor lighting fixture, helping to protect them from moisture and other environmental factors. Compatibility: The kit is specifically designed for use with vertical siding that is 1/2 inch (0.5 inches) thick. It provides a secure and stable platform for attaching outdoor lighting fixtures to this type of siding.
Outdoor Use: Since it is intended for outdoor applications, the kit is likely made of weather-resistant materials to withstand exposure to the elements. Ease of Installation: Mounting kits like this one typically make it easier to install outdoor lighting fixtures on siding by providing a secure and well-structured base for attachment.
Mounts light fixtures on all siding types, including T-111, HardiePlank Lap Siding, and flat surfaces. Fast and easy to install after siding is up. extured, paintable surface. Kit includes mounting block with built-in electrical box, NM cable connector, and 4 screws.
Electrical box dimensions: 4" diameter x 1/2" deep. Flat Surface Mounting; Siding Type 1/2 Inch Lap; Material UV Rated Plastic; Capacity 6.8 Cubic Inch; Size 4 Inch Diameter X 6.61 Inch Width X 0.5 Inch Depth X 6.61 Inch Height

iMBAPrice iMBA-8141-1 Vertical Siding Lamp Mounting Kit with Built-in Box for 1/2 Inch Vertical Siding LAP. This unit offers a complete Siding Mounting Kit for smooth, vertical mounting of light fixtures on all siding types. The built-in electrical box design make it very easy to install. The time limit for this warranty is one year following the date of sale or one year after the date of installation, whichever is the earlier date. This warranty does not apply when the product is used for any purpose other than the intended use. This warranty does not apply when the product is used for any installation which would violate the national electrical code or any code which takes precedence in a particular jurisdiction. Labor is not included.