Twin neutral design located in wireway, away from circuit breakers, means easier wiring and balancing of the loadExtra 1-1/2 in knockout for bundling allows maximum wiring gutter space for ease of wiring in compliance with NEC requirements1-piece roll formed metal backpan with circuit breaker alignment notches ensures accurately aligned breaker and bus tabsStandard 14-3/8 in W enclosures fit snugly between wall studsTangential main knockout eliminates the need for conduit offsets which permits faster, easier installationBR loadcenters feature Robertson slotted square combo screw heads, which means only one screwdriver is need for installation