|Arlington's non-metallic recessed indoor InBox allows items such as furniture or televisions to be placed closer to the wall. Our InBox uses mounting wings to attach to the wall, so it is ideal for new or retrofit construction. This single gang 21.0 cubic inch InBox comes in black, is cULus listed, and has a two hour fire rating. It comes with the recessed box, NM94 cable connector, trim plate, standard duplex face plate, standard GFCI face plate, and mounting/installation screws. With grounding clip.