StandDesk Electric Sit-to-Stand Enterprise Desk Frame - 4 Button Memory Controller, Dual Motor, Three Stage - Whisper Quiet Movement - Support up to 350lbs (Top Not Included) Black STAND WITH CONFIDENCE with StandDesk's 3-Stage Lifting Columns & 2 Motors with 350-lb capacity. Supports multiple positions with a digital display handset with 4 memory preset options! STURDY, RELIABLE, AND HEIGHT ADJUSTABLE from 23.5" to 49.5" (without top) at 1.5"/second. PAIR WITH MANY TABLE TOPS - Supports a wide variety of desktops ranging in width from 42.25" to 74". Compatible with our premium Bamboo Tops and Laminate Tops - ALSO SOLD ON AMAZON! EASY ASSEMBLY! - less than 30 minutes for most users BACKED BY STANDDESK WARRANTY  10-year limited warranty. 3-years for moving/electrical parts - Customer satisfaction is our number one priority