This kit is for installation on raised floors in commercial or residential locations. Install in wood, tile, carpet flooring or granite / marble countertops. Not for use in concrete Screw covers protect outlets from dirt buildup and eliminates tampering by children and animals Assembled dimensions: 5. 0" Length x 5. 0" Width x 3. 8"Height Comes with instructions UL listed, meets 2011 NEC Article 406. 14 for tamper-resistant outlets