Bryant Electric RF515SS Floor Box Kit, Stainless Boxes easily mount into the floor and are height adjustable (up to inch) for optimal alignment and fit Recessed receptacle minimizes plug protrusion, allows furniture to be located over the plug Pre-assembled flange and cover with removable neoprene gaskets Height accessible adjustments after the box is mounted Wood floor boxes allow for the placement of electrical power or a combination of power and voice/data devices. Boxes easily mount into the floor and are height adjustable (up to inch) for optimal alignment and fit.