Provide a comfortable workspace for physically-challenged students with the Populas Knob-Adjusted Wheelchair Accessible School Desk. Adjust the height from 24 inches to 34 inches to accommodate most wheelchair sizes and styles. Tilt the desk top from 0 degrees to 50 degrees to best fit the needs of each student. A 1/2-inch lip keeps pencils and books from sliding when the surface is tilted. The book box allows you to store supplies and materials without giving up knee space.