The Imperial Boflex DR Type Intake Exhaust Premium Round Plastic Diffusers are crafted from high-quality white polypropylene, offering superior corrosion resistance and durability. These versatile diffusers feature two adjustable flow settings (0% to 100%) for precise control of air intake or output, ensuring maximum efficiency. Perfect for heating, air conditioning, air exchange, or venting systems, they integrate seamlessly with flexible or rigid ducts. Their quiet operation and sleek, attractive design make them ideal for installation in any space, delivering both performance and aesthetic appeal.