Three-story portable home fire escape ladder easily deploys from standard residential windows. Fully portable and stores compactly. Window escape ladders are assembled and ready to use. 24-foot length. Strong steel construction tested to 1,125 lbs. Tested to ASTM standards. DuPont Cordura(R) nylon strapping for added strength and stability. First Alert Three Story Fire Escape Ladder is one of many Ladders & Step Stools available through Office Depot. Made by First Alert.