DEVAISE Adjustable Height Standing Desk, 55 inch Sit to Stand Up Desk Workstation with Crank Handle for Office Home, BlackERGONOMIC DESIGN: This innovative adjustable height standing desk promotes better posture, reduce back and neck pain, a thinner waist line and increased productivity. EASY CRANK SYSTEM: Standing desk is designed with a hand crank that be placed on the front of desktop. Load up your desk with all of your office essentials and simply turn the crank to raise and lower the desk to your desired height! Adjustable height from 29. 5" to 45. 5". SPACIOUS