THR-TB004 3-crank Medical Orthopedic hospital bed 1) Dimension: L2020 x W900 x H500-750mm 2) bed base is made of cold-rolled steel plate and coated by electrostatic spray. 3) Aluminium alloy guard rails, retractable, easy operation. 4) Built-in cranks control back rest & leg rest upward and height function.tion.tion. 5) With protection rubber at the leg end. 6) with anti-bump cushion device on the bed corners for protection. 7) With oddment shelf under the bed. 8) With multi-function orthopedic traction frame, ensure traction treatment. 9) with special bed base structure: -When it is in lowest position, 4 steel tube of bed legs grounded to floor, preventing bed moving; -when it is in high position, 4PCS 125mm diameter castors let bed move easily.