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Get it between 2025-01-28 to 2025-02-04. Additional 3 business days for provincial shipping.
FEATURES The neverest RKI backdraft damper 4 inch effortlessly opens and closes automatically. This versatile dryer vent damper is equipped with a robust spring and suits both horizontal and vertical installations. Our Inline vent draft blocker is retrofit-friendly and fits seamlessly.
PREMIUM MATERIAL Made with quality materials, the housing of our air duct damper flap is galvanized steel, while the blades are aluminum, and the axle and spring are stainless steel. Achieve tight sealing and fastening with the rubber strip attached to the outside of our 4 inch damper duct.
PERFORMANCE Our 4 inch hvac damper prevents cold air or wind from entering the ventilation pipe. The flap opens only in the outgoing air direction, ensuring no external air can penetrate the ventilation pipe.
MULTI-USE Ideal for AC, dryers, exhausts, extractor or range hoods, heating systems, vents, and various residential, commercial, and industrial HVAC applications. The rubber seal minimizes noise during flap blade movements. Install only in metal ducts, make sure to measure your duct diameter before purchasing.
EASY INSTALLATION Simply push the dryer damper into the ventilation pipe as far as possible. The position of the spring should be horizontal when the flap is installed horizontally so that it can be opened and closed optimally. This also applies to the vertical installation.
INSTALLATION Backdraft damper 4 installation is very easy and uncomplicated. The exhaust shutter can be installed either vertically or horizontally. If you are installing the hvac dampener horizontally make sure that the axis is perpendicular to the ground. This will avoid the flaps from hanging open. For vertical installation this isn't a problem The air damper will be pushed into the duct behind the ventilator. The white stripe will create a seal around the damper. The black gummi band should be inserted with the 4 in damper into the duct as well as this reduces loud clapping noises from the 4 inch backdraft damper. Backdraft preventer flaps needs to open with the flow of air from your bathroom fan. The dryer vent draft blocker if installed incorrectly can damage your ventilator therefore make sure the flaps open in the right direction, with the flow of air, going outside. GUARANTEE 4 inline damper is made to the highest quality standards and if your expectations are not met, we offer a full refund and a year long warranty. Please contact us if you have any problems, or questions. Customer satisfaction is very important to us.