BOTT Adjustable Shelves can be mounted onto rear frame uprights to provide increased storage at a workbench. Adjustable shelf that mounts across the uprights of the Bench Rear Frame System to provide easily accessible and adjustable elevated storage area for users Also Adjustable in position on rear frame uprights Load capacity: 60kg (UDL) Choose from 8 sizes: 450mm(w) x 200mm(d) 900mm(w) x 200mm(d) 1350mm(w) x 200mm(d) 1800mm(w) x 200mm(d) 450mm(w) x 350mm(d) 900mm(w) x 350mm(d) 1350mm(w) x 350mm(d) 1800mm(w) x 350mm(d)