Drawer Box Specialties says the design of its new Smart Shelf puts hard-to-find items at the back of a cabinet within easy reach. The smooth-gliding drawer mounts directly to cabinet shelves, helping maximize access. The three-inch-high shelf kits come fully assembled in five stock sizes. Smart Shelf is designed for cabinets 22 or more inches deep. The units are made with dovetail joints, from 12-millimetre, pre-finished Baltic birch.