Pop Up Trundle Bed: * Helically suspended link deck * Height: 15 1/4"" elevated; 4 1/2" collapsed * Sturdy construction designed for maximum strength and safety * Dual 3/4"" x 3/4"" cross bars give the pop up trundle added center support * Angle up side rails help retain trundle bed mattress * Dual gravity locks ensure position stability, so you can move around without the trundle bed toppling over * Torsion Spring-loaded Activation Bar assures that bar is locked in position * Rounded corners for safety * Pop up trundle model #450205