Aidata Ergonomic Sit-Stand Mobile Laptop Cart Work Station with Printer Shelf (Model: LPD009P) Easy Assembly.Easily adjust height from sitting to standing position with the Easy Touch lever to create an ergonomic work station. Gas Spring Pole adjusts height from 28.5 to 38.5. Work surface measures approximately 23.5W x 14.5D. All shelves are made of durable ABS plastic in a black matte finish for a modern look which is easy to care for. Retractable Mouse Pad and Cup Holder swivel out of the way when not in use. Tripod design features 3 Lockable Casters for easy movement. Safety bar/handle with rubber grip makes it easy to hold when relocating the cart. Printer Shelf measures 16W x 10.5D