The M-Series Strip Door Kit is for walk-in coolers and freezers. Strips overlap each other to create an airflow block while permanent doors are left open. The Kit is constructed out of 6" wide x .060 thick polar reinforced clear PVC looped top strips, an aluminum bar and universal mounting brackets. The Kit is rated for -20F to 140F. Fits openings up to 69" wide x 78" high. - Plastic; clear - Width 73 in - Height 80 in - Thickness .060 - Sold per each