Description - Easily transition from sitting to standing with gas spring height adjustment - Flexible set up; spacious top platform holds two monitors, or a monitor and laptop and the bottom level perfectly holds a keyboard and mouse - Keep your phone or other accessories within reach with the convenient device channel on top platform • Fully assembled (operation manual included) - Work comfortably sitting or standing with 15.5” of adjustment range - Compatible with Fellowes Sit-Stand Single and Dual Monitor Arm Kit - Full Dimensions: 31.5”W x 24.2”D, Keyboard Dimensions: 31.3”W x 11.8”D - Product link: https://www.fellowes.com/us/en/products/product-details.aspx?prod=US-8215001&cat=WORKPLACE-WELLNESS&subcat=SITSTAND-SOLUTIONS&tercat=SIT-STAND-WORKSTATIONS