Ergonomic 27' Keyboard Riser: Features a 26.6 x 11.4 platform that raises your keyboard and mouse to a comfortable typing position. Perfect addition to a standing workstation, supporting up to 11 lbs of weight 8 Height Settings: Innovative scissor lift design provides 8 different height settings (8.2' to 13) to accommodate your ideal setup. Adjustment between settings is fast and easy so you can raise your keyboard without lowering productivity