RETRACTABLE BOARD Make the most of your workspace. The retractable 5' x 10' glass dry-erase board lets you easily write down notes and tuck them away for a clean, de-cluttered desktop. ADJUSTABLE HEIGHT Find the most comfortable height for your desk. This riser has 3 adjustable height levels, 2 1/4', 3 3/4', and 5 1/4', so you can easily set your laptop or monitor at eye-level. CONTEMPORARY GLASS Elevate your desktop with a premium, glass dry-erase board. The durable tempered glass surface will not stain or ghost, while the sleek design adds modern style to any space. DURABLE DESIGN Both sturdy and reliable, this riser has a 6 mm thick tempered glass surface and supports up to 100 lbs. Plus, non-skid rubber feet help keep the riser in place on your desk. ACCESSORIES INCLUDED Riser comes with an accessory tray, 1 dry-erase marker and 5 year warranty. No assembly required. Riser surface measures 10 1/4' x 14'.