Da-Lite 208 Accessory Shelf For Use With 425 and 203 Project-O-Stand Models Use for projectors, speakers, audio visual or multi-media components For use with 203 and 425 Project-O-Stands Height adjustable from 32 to 56. Removable legs clamp to back of platform. Dimension : 23 L x 16 W x 2 H Weight : 6 Lbs