Square D® NQ/NQM panelboards, NC44SHR, is a grey hinged steel surfface cover. has NEMA1 degree of protection, cULus certified. Warranty period is 18 month. . QO Load Centers feature plated copper bus, providing superior performance and durability. This QO Load Center accessory is grounding bar kit, 27 terminals. This grounding bar is UL component recognized and CSA certified.