Backdraft Damper : Prevent odors and exhaust gases from entering your house with this durable and heat-resistant square duct connector Detachable : Easily install and remove the backdraft damper vent for your range hood, ensuring efficient ventilation without backflow Oil and Heat Resistant: This inline extractor fan features a check valve to block odors, making it for kitchens and other areas with strong smells Easy to Install: Made of durable , this backdraft damper is suitable for both residential and commercial use, providing reliable against backflow Improved Air : Keep your indoor air clean and fresh with this backdraft damper, which is designed to prevent contaminants from entering your living space, Weight: 1.26324876126 pounds, Manufacturer: ALCXAZS