Aluminum floor box construction with three 1/2 trade size knockouts: two on the sides and one on the bottom. 18 cu. in. (295 cu.cm) capacity. Requires a 4 (102mm) diameter hole and overall floor depth of 1 (25mm). Assembled with scrub water gasket. For use on tile, wood, or carpet floors. Unit comes with a 15A quad receptacle and a brushed brass flange and black color device plate.