Stand Up Desk Store's Rolling Adjustable Height Two Tier Standing Desk Computer Workstation delivers all the quality and features you need to enjoy a healthier, more productive workday. The two-level design places your keyboard, mouse, and monitors at a comfortable, ergonomic position. The tool adjustable height lets you raise and lower the desk in 1" increments, so you can find the perfect fit. Comes with a set of 3" lockable casters that roll smoothly on carpeted and hard floors. Overall dimensions are 24", 31.5", 39.4", or 47.25" W (depending on model) x 28.8" D x 34.1" to 46.1" H. Weight capacity is 154 lbs. BIFMA certified for safety and durability. Easy assembly. 5-year limited warranty against defects. Stand Up Desk Store is based in the suburbs of Chicago.