20" x 26" work surface of ABS plastic Pencil grooves Four fixed heights: 22", 24", 27", and 30" Adjustable height model: 24" - 30" Black nylon glides and end caps High quality steel frame Desks can be stacked four high Sold in carton quantities only (2 per carton) 15 year manufacturers warranty Made in the USA GreenGuard Certified Optional removable book box is also available for an up-charge in a wide variety of colors. Chrome and Metallic frames available for an up-charge. Call our School Furniture Xperts toll free at 1-877-825-7803 for info.