PowerMark Gold indoor main breaker value kit. Includes (5) THQL1120 20A 1" single-pole circuit breakers. Features a sturdy tin-plated copper bus bar and a galvanized box for increased durability and reliability. 100% rated split neutral on each side. 22,000 AIC rating. 1-piece interior removes and re-installs easily. Combination surface/flush front. ANSI (American National Standards Institute) certified.