Tripp Lite WWSSDC Sit Stand Desktop Workstation Adjustable Standing best Desk &Clamp

Product Name: Tripp Lite WWSSDC Sit Stand Desktop Workstation Adjustable Standing best Desk &Clamp
Brand new in box, never opened. The first pic has an attachment that is not included but can be bought separately (the attachment for the highest monitor). I bought this and never ended up using. Adapt a traditional desk for sit-stand ergonomics without modifying the entire work surface. Clamp this workstation to a flat surface up to 3 in. thick, and adjust the height of your monitor and keyboard. Lever for smooth one-touch height adjustment Max. height of monitor platform is 22 in. above work surface Max. height of best keyboard tray is 13.5 in. above work surface Keyboard tray holds the largest, most popular models Maximum weight capacity is 29 lb. One-Touch Height Adjustment for Sit-Stand Ergonomics Lever raises or lowers pneumatic arm for smooth height adjustment Monitor platform and keyboard tray move together for seamless sit-stand transitions Use included hex key to increase or decrease tension according to load Maximum weight capacity is 29 lb.