"The Rollo Fire Escape Ladder is one of the most versatile of mobile escape ladders. It has adjustable hooks spanning any wall from 9 inches wall-thickness up to a wall-thickness of just over 20 inches and can be applied from almost any type of window. The escape ladder has a fire resistant backing-sheet that allows the ladder to unroll safely over slanted roofs, uneven surfaces and protruding features like canopies. Distance pieces keep the rungs safely off the wall and give you an excellent foothold. The ladder can be rolled up neatly and stored in a wardrobe or similar. Easy Storage, Lightweight & Quick to Use. Its compact size makes it easy to store under your bed or in a cupboard. In an emergency, the Rollo Roll-Out can be set up in seconds-just position it over the wall below the window and release the ladder. Place the ladder over the sill/wall and pull the red toggle. The ladder will unroll and is immediately useable. "