S2S 2 Segment Standing Desk Base-Black 2-Segment Base (travels from 27 to 46.5 tall) Adjustable width telescoping frame that accommodates table tops from 35.5" to 80 plus." 353 lbs. lift capacity - our desk base has been tested with various weights and this is where we set the max lift capacity. Our desk works with 385 lbs. 4 position Quick Touch LED programmable controller Desk Raises & Lowers at 1.5" per second speed, with a soft start and stop controller