Designed for safety and added support while getting in and out, or transferring to and from bed. The base of the rail installs between the mattress and box spring and is secured with a heavy duty adjustable strap which runs completely around the box spring and snaps into a buckle. Strap length will accommodate up to a queen sized bed. The powder coated steel handle clips into the frame with push buttons and can be removed when making the bed. No tools are required for Installation. 19"x11"