Berner ARCTIC SEAL Bi-parting doors are designed to offer better protection for your freezer and cooler by creating a barrier to temperature, insects and odors. The unique cam design allows the ARCTIC SEAL to utilize less space and is not restricted to large wall thicknesses. The hardware and panels move on an even plane for easy open and close movement. The USDA low temp PVC material is attached to brackets in such a way that the doorway opening is completely covered, even around the hinge parts. This revolutionary swinging door design allows the main cooler or freezer door to be closed without interference.