Sold as 1 Each. EASY HEIGHT ADJUSTMENT: Sit to stand in seconds with this standing desk converter. The gas spring mechanism allows for smooth up and down height adjustments from 6.25' to 17', allowing you to find the perfect height. THE MOUNT-IT! PROMISE OF EXCELLENCE: We are confident youll not only love your sit to stand desktop riser, but youll get plenty of use out of it. However, if for some reason you are not 100% satisfied with your purchase or there is a defect, return it within 30 days and we promise a full refund or replacement. Supported by manufacturer's limited lifetime warranty. SPACIOUS DESIGN: This 36.5' wide standing desk allows enough room for a dual monitor setup or any monitor and laptop combo. Affordable, complete adjustable desktop workstation, perfect for anyone who wants to improve ergonomics on a budget. ERGONOMIC DESK: Sit and stand throughout your day with this height adjustable stand up desk converter. Improve your posture, boost productivity, and incre