For installing single-gang floor boxes in new concrete pours, Arlington offers a low cost, labor-saving solution. Each kit includes our concrete box, mud cover to use while pouring, (4) 3/4 in. plugs, (2) 1 in. plugs, spacers to adjust to final floor thickness (1/8 in., 1/4 in., 1/2 in. and 3/4 in.), tamper-resistant receptacle, gasketed cover plate, (5) No. 6 to 32 x 1/2 in. cover plate screws, (4) No. 8 x 5/8 in. sheet metal screws and (4) No. 8 x 1-1/4 in. sheet metal screws. The metal cover is nickel-plated to effectively match the space and has two flip lids to protect the receptacle when not in use, while still providing quick access.