Square D™ QO® Main Lug Load Center, 3-Phase Fixed, 208Y/120 VAC/240/120 Delta VAC/240 Delta VAC, 225 A, 50/60 Hz Frequency, 65 kA Interrupt, 42 Circuits, QO/MLO Breaker, Panel Breaker Mounting, 3/4-Wire Wiring Configuration, 42 Spaces, 4 AWG to 300 kcmil Al/Cu Wire, NEMA 3R Enclosure, 8R Enclosure Box, Galvanized Steel Housing Material, 14.75 in W x 4.52 in D x 37.98 in H Dimensions