Builders Edge 8.125 in. x 12 in. #117 Bright White Jumbo Electrical Mounting Block Centered 130110020117
Mounting Blocks - Siding Accessories - The Home Depot
Mounting Blocks - Valu Home Centers | For the do-it-yourselfer in you
10 x 16mm Shallow Mounting Block - Powerpoint Switch Mounting - BLACK | eBay
Cold Rolled Steel Electrical Box 16'' x 16'' x 8'' Indoor/Outdoor Electrical Enclosure Box 16" H x 16" W x 8" D with Mounting Plate IP65 Weatherproof Anti-Rust and Anti-Corrosion - Bimiup