Part of the Lorell Electric Height-Adjustable Workstation, this sit / stand desk frame adjusts quickly, smoothly & quietly with a gentle push of a button. Included digital display controller features four built-in memory modules. Adjustment speed is 1.3" per second. Sit-to-Stand design is perfect way to increase your circulation, comfort & productivity. It adjusts from 24" to 50" high. Maximum capacity is 275 lb. Three-tier, extended-height base with memory controller is made with two square column legs & standard 27-1/2" feet for added stability on tabletop depths ranging from 24" to 30" tabletops (sold separately).