20 amp non-metallic Power Inlet Box. UL Listed for generators up to 5000 watts. Durable, glass-filled nylon NEMA 3R-rated enclosure includes 20A 120/240V male inlet in NEMA configuration L14-20 on bottom - so unit maintains raintight rating when cord is connected, now required by most inspectors. Enclosure contains 6 knockouts for ultimate wiring flexibility and 99 cubic inches of wiring room.