Convert your pallet racks to carton flow racks with these QuikPik® Gravity Flow Pallet Rack Levels. Carton flow racks let you store all your products in half the space, cutting walking time and labor costs. RollaTrak with guide rails conveys packages in separate lanes for first in, first out inventory control. Shelf capacity: 25 lbs. per square foot. Inverted channel locks firmly in place without tools and adjusts every 1/2" for maximum lane width flexibility. Patented clip attaches to all pallet racking with holes on the sides of the post that are round or square, 7/16" or larger and 2" center-to-center. Comes complete with 16 RollaTrak pieces and 7 guide rails per shelf level (uprights and beams not included). Made in USA.