Load-center 100 A 20-space

BR style 1 in load center, main circuit breaker, value pack, 100 A, single-phase, 40-pole, 40 circuits, 20 spaces, 120/240 V. Wire size #4-1/0 AWG Cu/Al at 60 or 75 deg C, NEMA 1 enclosure, d1 box size. Aluminum bus, combination mounting. 3-7/8 in x 14-5/16 in x 18-3/4 in. Includes 6-br120. Cover included.