Works with wood or wire shelves (not included). Holds a 16" deep shelf for storing large items. Includes speed clips to lock wire shelf in place and allow for quick removal of wooden shelf for repositioning. Powder-coated steel for durability - resists, rusting, chipping and cracking. Set of three brackets hold up to 350 lbs. per 4' shelf. Easy to attach and move around on the rail. Requires FastTrack uprights for installation.