These see-through, walk-through, drive-through, heavy-duty Vinyl-Strip Doors help keep heat or coolness in and weather, dust, and flies out. The overlapping, flexible strips part easily then close automatically. Among the door's advantages are these: allows in light (brightens a building's interior), remains flexible in low temperatures, UV-stabilized (no yellowing or cracking), low-maintenance (clean occasionally), low-cost (replace only damaged strips, not entire door), and fits almost any size opening (up to 14 feet high).