The Homeline load center offer features Homeline circuit breakers, ground fault circuit breakers and arc fault interrupters. Homeline® Load Centers are designed for residential and industrial use to protect electrical systems, equipment and people. Systems are single phase and are rated for indoor use or are rain proof. QO Load Centers enable the use of a full complement of accessories. This is an assemble kit that inclused qwik grip, filler plates, wiring diagram and instruction bulletin. The accessory is UL Listed.