First Alert Two Story Emergency Escape Ladder. Fire safety ladder length is ideal for a two-story home or apartment. Durable steel and nylon construction. Steel stabilizers hold the ladder away from the wall for quick exit to safety. Ladder comes fully assembled and folds easily for storage. Designed for window sills between 6 and 10 in. wide. Built for durability and provides a stable climb down. Can be used on standard window sills, stored under a bed or in a closet<br />for easy access and comes fully assembled.