Overview Reviews Product Description Aluminum Thrifty Flame Stop Used for 1" thickness Baffles and frame made from Aluminum Maximum operating temperature is 250°F Meets NFPA Standard 96 Product Videos Custom Field Product Reviews Write a Review Write a Review × Smith Filter Corp. Aluminum THRIFTY FLAME STOP 25x25x1 Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Review Subject * Comments *