Bento Box®: 20 Amp, 3 Phase, 4 Pole, 5 Wire, 120/208Y VAC, Bento Enclosure, NEMA L21-20, 20 Amp inlet to (3) NEMA 5-20, 20 Amp color-coded duplex receptacles, Feed Thru, NEMA 1 Indoor. The new doghouse is ideal for tradeshow and exhibitions where a large number of convenience receptacles are needed over a wide area. The feed thru feature allows multiple boxes to be placed along one feed so that receptacles can be easily accessed wherever needed. Doghouses are also popular in live event and audio applications where multiple amplifiers, speakers and other audio components require power while positioned on a stage or other venue.