Raise and lower your work surface quickly and effortlessly, so you can work better. Its ergonomic, mobile, space saving attributes make it an attractive choice in all types of businesses, offices, trade shows, mall kiosks, retail stores, factories, schools, hospitals, and even at home. No tools needed- locking rotary knobs make height adjustment easy. The height of the top two platforms can be adjusted from a minimum of 37.25 inches to a maximum top shelf height of 53.75 inches. 16.5 inches of height adjustment allows you to find a comfortable sitting and standing position throughout the day. Adjustable desk offers a large work surface for big projects. 4 platforms to store monitor, laptop, keyboard, printer, CPU, PC tower or speakers. Black laminated desk with black durable steel base. Height adjustable up to 17" with 11 locking intervals. Dimensions: 37.25"-53.75"H x 27.5"W x 26"D. Two open utility shelves. Capacity: 33 lbs. Requires assembly upon delivery. Includes four casters (two locking) for easy mobility.