QO Load Centers offer premium features by allowing QO breakers, ground fault interrupters, arc fault interrupters, and surge arresters to be installed inside. QO Load Centers enable the use of a full complement of accessories. Systems can be single or three phase and have indoor and outdoor versions. Indoor enclosures are designed to rotate 180 degrees to accommodate top or bottom service entrance feed which saves expensive service cable. QO load centers feature plated copper bus, providing superior performance and durability. This flush cover is painted grey and does not include a door. The door must be purchased separately. This cover is for an indoor load center rated NEMA 1 with 60 spaces. The load center cover is 42.13 inches tall, 15.44 inches wide and 0.7 inches deep.