Rainproof enclosure Single phase, 3 wire, solid neutral 2 spaces, 4 circuits, 2 tandem breakers accepted, 120/240 volt AC 10,000 AIR Factory installed fixed main lugs furnished with removable B-cap covering 2 in. bushed opening, B-hubs and No.PK4GTA ground bar sold separately Use No.10 maximum wire for GFI circuit breaker straight in main design No.12 - 3 Al or No.14 - 4 Cu AWG main wire Style 1R box, 4.88 in. x 9.38 in. x 4 in. UL Listed