DISCONTINUED MODELPre-owned in excellent condition; see photos for full disclosure--no warping, marks, nicks, etc. May be some signs of previous assembly>> Materials: wood>> Color: black>> Weight: 16 pounds>> Dimensions: 25.6 L x 30.7 W x 3.35 H inchesFEATURES (includes original owner's instructions)>> Place the High Rise Stand Up Desk Converter on top of your existing desk, and you are ready to work standing up>> Large work surface for keyboard, mouse, phone and accessories all on one surface>> Sturdy construction using wood and durable laminate coating to provide years of use>> Tapered rear portion to fit corner cubicles and notched to help manage cables>> Height adjustable optional extenders add an additional 2” for taller people>> Transforms any sit down desk into an ergonomic stand up desk with optional height extenders>> Surface is raised 12 1/2" or 14 1/2" for ergonomic placement of your office equipment and supplies>> Lower shelf stores books, papers or accessories>> Also works well as a shelf for everyday office equipment