GE Main Lug Load Center, Three Phase Standard, Series: PowerMark Plus TL, 208 Y/120 VAC, 200 A, 65 kA Interrupt, 42 Circuits, THQL Breaker, Plug-In Breaker Mounting, 4-Wire Wiring Configuration, 42 Spaces, 1 AWG to 250 kcmil Wire, Plug-In Mount, NEMA 1, 39-3/16 in L x 14 in W x 3-3/4 in H