DIMENSIONS: UPRIGHT POSITION: * Height: 51 5/8" * Total Width: 20 3/8" 45 DEGREE POSITION: * Height: 42 4/9" PLATFORM POSITION: * Height (Handle):42 4/9" * Bed Dimensions: 50 1/2 x 12" (LxW) CASTERS: 5"WHEELS: * Shoud be inflated to 30 PSI.