The Height Adjustable Electric Sit Stand Workstation - Eficiente Series by Right Angle - combines the quality of Right Angle, made in the USA, products, with an easy to use, durable ergonomic workstation. Available in a silver or black electric base with either a 24" or 30" deep top. The tops allow for 14" or 17" deep ergonomic accessory (keyboards, pc holders, etc) to be mounted underneath, respectively. Additionally, these ergonomic sit stand workstations feature simple one button height adjustment, with a 1.2" per second rate of adjustment. These Adjustable Sit to Stand Desks ship within 14-21 business days as they are custom made to order in Wisconsin, USA.