Constructed with rotationally molded polyethylene, impact absorbing Non-CFC urethane foam core, and full height aluminum back spine, the Duruilte Retailer XHD is exceptionally durable in high volume retail establishments. The Retailer XHD is tough enough to withstand the abuse of personnel, carts, manual and motorized pallet jacks and occasional low speed forklift traffic. This heavy duty door is design to comply with all USDA sanitation requirements. Durulite doors are known for their long-term value and durability.