Panelboard Main Breaker Kit, For Use With Square D NQ Panelboards, Amps 400, Includes (1) Cover, (1) Hex Shank, (1) Main Breaker Label, (1) Mounting Pan, (2) Support Brackets, (21) Screws, (3) Main Breaker Connectors, (3) Washers, Frame Size 400A/L, Compatible Circuit Breaker Series LAL, LHL