Patent attributes
A poke-through floor box assembly adapted to be supported in an opening in the floor of a building. An intumescent layer in the assembly provides a fire-proof rating for the floor box to match the fire-proof rating of the surrounding structure. The assembly includes a can and an electrical box having separate compartments for housing low and high voltage components. A transition body extends between the electrical box and the can opening. A flange and cover provide a means for closing the assembly. Keystone holders on the transition body enable mounting of low voltage devices such as USB ports. EMT fittings provide a means for attaching electrical metal tubing to the can to carry power and low voltage signals into the can. Alignment features on both the electrical box and the transition body enable rapid assembly and installation of the electrical box at the job site.