NPS Signature Science Tables are height adjustable using specially designed patented legs. Tables are perfect for your ADA needs asthey adjust in 3/4 increments from 27-42H (with spacer provided). The 11 gauge leg-bases are fastened to the tabletop with 6 heavy-duty screws. Legs are available in light oak or textured black. All legs come standard with simple-adjust glides. Optional casters are available. Table can easily be set on an incline for physics experiments. Solid 4 1/2 ash wood aprons are securely attached a High Pressure Laminate table top, providing the ideal surface for all types of lab experiments. Optional book box is available.