Square D™ QO® Main Lug Load Center, 1-Phase Convertible Neutral, 240 VAC, 225 A, 1 Pole, 50/60 Hz, 65 kA Interrupt, 42 Circuits, QO Breaker, Panel Breaker Mounting, 3-Wire Wiring Configuration, 54 Spaces, 6 AWG to 300 kcmil Wire, Plug-On Mount, NEMA 1, 12 Enclosure Box, Steel Housing, 14.25 in W x 3.75 in D x 39.37 in H