PowerMark Gold indoor main breaker value kit. Includes (6) 20A single-pole THQL 1" circuit breakers. Features sturdy tin-plated copper bus bar and galvanized box for increased durability and reliability. For use as an indoor main breaker load center. 100% split neutral holes on each side. Top or bottom feed. 3 wire, 22,000 AIC rating. 1-piece interior removes and re-installs easily. Combination surface/flush front. ANSI (American National Standards Institute) certified.