Hon&Guan 4 Inch Duct -16 FT White with damper

Upgrade design The 4 inch damper on both sides of the top and bottom of the two new concave inward pressure rib, and increase the thickness to 0.6mm,to ensure that the product is more solid, not easy to damage., Material The backdraft damper and the flap leaves is made of a galvanized steel, the axis are made of aluminum, while the spring are made of carbon steel., Lightweight valve wings The valve wings open under the pressure created by the airflow; when the air flows in the opposite direction, it is automatically closed under the action of the spring, so as to cut off the flow. Rubber ring ensure 100% closure and quiet closing.,Heat Resistant and Durable: With a temperature range of -22°F to 185°F, the Hon&Guan dryer vent hose is designed to withstand high temperatures, ensuring long-lasting durability even in humid and hot air environments,Extendable and Cuttable: This flexible duct can be extended up to 16 feet in length, providing the flexibility to customize and cut it to any desired length. This feature makes it convenient for installation and use in tight and compact spaces