Fits over any wheelchair. Height is adjusts from 28 to 39 (71 99 cm) by a hand crank. Tabletop is 32 x 36 (81 x 91cm). Cutout is 22 x 6 (56 x 15 cm). Base measures 34W x 26D (86 x 66 cm). Easy-to-maintain Formica tray has a raised rim, and tilts to a 45-degree angle. Swivel casters with step-on brakes are fitted on an H-base. Latex free.