Width is adjusted by telescopic mechanism.
Height is manually adjusted by hand operated crank using simple cog and wheel system that turns a drive rod that raises and lowers the unit. Simple mechanism means little maintenance and little to break. Enhanced engineering designed without need of a crossbar (which also allows for easy wheelchair access). Select a table top option, or order the frame only, or use your own table top. Laminate tops are durable, water resistant, and 1" thick. They are reversible (either White/Maple, or Black/Mahogany). You choose the side you want to use! An industry leading 6 year warranty And it has a "Risk Free" 30 day return policy if you are unhappy for ANY reason with the product. Nothing to worry about - Buy one today!