Abstract: A bed rail (A) includes a first vertical end member (10) and a second vertical end member (12) between which cross members (14, 16, 18) and telescopically received stub members (30, 32, 34) extend. The spacer member (B) is connected between free ends of some of the cross members to maintain the positional stability. A pair of brackets (C) slidingly receive the vertical end members. The brackets each includes a slot (64) which is dimensioned with an appropriate width to receive the cross members or the stub members adjacent their interconnection with the end members. A spring biased member (80) is biased by a spring (82) into engagement with a locking aperture (68) in the bracket. A bracket cam surface (66) cams the spring biased member inward as the bed side rail is raised. A knob (84) enables an operator to withdraw the spring biased member to lower the side rail.