Additional Details ------------------------------ Product description: "SQUARE D BY SCHNEIDER ELECTRIC" RAINTIGHT HUB1"B Style120/240VSquare D QO20A Single Pole Tandem Circuit Breaker1/2 Space Per PoleOutdoor / Rainproof For Older Model Load Centers Without Pan Rail SlotsAluminum, for use on NEMA 3R (outdoor) enclosures.