Pack'N Stack's retailer-approved shipper/display trays come in various formats with wide shoulders for extra strength and durability, and offer optional window openings and perforated tear-away windows. The simple assembly requires less folding and gluing and expedites co-packing operations. With fewer components, and improved palletization, Pack'N Stack uses less materials, reduces the need for fillers and is available in a range of retailer-approved designs.