Attaches to any size bed and provides ergonomic support for people who have difficulty getting in and out of bed. The "M" section, covered with rubberized foam, provides a secure, non-slip grip. The handle fits securely between the mattress and the box spring. Nylon straps under the frame provide stability. Easy to install. No tools required. Width of the handle: 47cm . Adjustable height from 37-51 cm. NB: Not compatible with Bertec brand beds.