Alera AdaptivErgo Sit-Stand Two-Stage Electric Height-Adjustable Table Base, 48.06" x 24.35" x 27.5" to 47.2", BlackSet the perfect height when sitting or standing, when you choose this electric, two stage, height adjustable table base. Durable, powder coated steel base features a 250 lb maximum lift capacity (maximum capacity includes the sold separately table top), a lift lower range from 27" to 45. 2" as well as a standard up and down control set. Dual motors provide speeds of up 0. 8" per second (depending on overall load); and though designed specifically for