The 52W 3 Position Sit to Stand Corner Desk with Shelves presents an ergonomic home office solution with transitional style. Enjoy the freedom to change positions quickly and easily throughout the day with a convenient Lift-n-Lock desktop that adjusts to three standing desk heights: 37, 40, and 42 inches from the floor. The durable surface supports up to 20 pounds when extended so you can take materials with you while giving your back and neck a break from sedentary work. The adjustable desk's built-in shelves are perfect for organizing books, supplies, and anything else you need to stay on task. Each shelf supports up to 50 pounds, and the center shelves can be adjusted to accommodate items of various sizes. This ergonomic desk with storage has been rigorously tested to meet or exceed industry standards for safety and performance and is backed by a 1 Year Warranty.