Uxcell 4 inch Backdraft Damper Shutter, 2 Pcs Inline Fan Vent Deflector Spring Loaded Blocker Backflow Preventer, for Retrofitting Ducting Preventing Unwanted Drafts in Metal Ducts

<p><strong>√MULTIPURPOSE</strong>&nbsp;</p><p>The Airflow ducting damper is an excellent choice for various HVAC systems, such as range hoods, bathroom exhaust fans, kitchen ventilation, air conditioning systems, heating ducts and vents, etc. Whether it is a small office building, a large factory, or a commercial kitchen, this HAVC backdraft damper plays an essential role in maintaining efficient ventilation and air quality control.</p><p><br></p><p><strong>√WHAT YOU GET</strong></p><p>The package comes with 2 Pcs Silver Tone HVAC Backdraft Damper with a 3.9-inch outer diameter of interface and 2.3-inch overall length.</p><p><br></p><p><strong>√RELIABLE MATERIAL</strong>&nbsp;</p><p>The backdraft damper is made of galvanized iron, capable of withstanding various physical stresses and impacts, ensuring a long-lasting service life. It is easy to install and maintain and is able to work for a long time in various harsh environments. Installation is a breeze. You can easily insert the damper into the ventilation pipe as far as it can go. When the flap is installed horizontally, the position of the spring should be horizontal to ensure it can be opened and closed properly. The same principle applies to vertical installation as well.</p><p><br></p><p><strong>√SPECIAL DESIGNED</strong>&nbsp;</p><p>Aluminum Spring-loaded folding blades: The lightweight and resilient aluminum alloy spring-loaded folding blades are engineered to respond swiftly and smoothly to airflow alterations, facilitating efficient ventilation regulation; Sealing Design: The inner rubber seal improves tightness and reduces noise. The outer foam sealing strip offers excellent tightening and fixation of the backdraft damper inside the duct.</p><p><br></p><p><strong>√KINDLY NOTE</strong></p><p>Please accurately confirm the outer diameter of the volume damper to ensure a proper fit.</p>

• Outer Diameter of Interface: 99mm/3.9inch;
• Overall Length: 58mm/2.3inch;
• Color: Silver Tone;
• Material: Galvanized iron/sealing rubber/Aluminum/Stainless Steel;
• Packing List: 2 Pcs HVAC Backdraft Damper.