Best Exhaust Vibration Damper

Fan Shutter, 18 In, Mill Finish Aluminum

Self-adhesive strip adheres to the Crank Vibration Damper.
Spark advance up to 60 Degree instead of only 10 Degree-15 Degree as on chain case timing tab.
Genuine Mopar Performance P4529070AB Damper Degree Timing Tape.

Replacement Damper Motor Actuator for Bathroom Exhaust & Similar Actuators.
Quality tested for over 150K cycles for flawless operation. Heavy-duty motor with all METAL gears..
VDM11-NP damper motor can be used in either Normally Open (NO) or Normally Closed (NC) installations..
Power: 110-120 VAC, 50/60 Hz, 6W, 0.36A | Opening/Closing Force: 0.22 N.m (2 Lb-In).
Installation: Direct coupling to 5/16" damper shaft, works well on both NO and NC dampers..

Back draft damper is made for insertion into inch ventilation ducts. The backflow damper RKI opens and closes automatically. It has a strong spring....
Damper has 2 valves, designed for use in air conditioners (AC), dryers, exhaust, extractor or range hoods, heating ducts, vents and other HVAC....
INSTALLATION: The backflow flap is installed by inserting it into the ventilation pipe until it stops. The position of the spring should be horizontal....
The backflow flap opens and closes automatically at low air volumes. It has a smooth-running spring and an internal foam strip to keep the blades from....
Back draught valves can be inserted into ventilation ducts which are flexible or non flexible. Cannot be used with plastic ducts as the sizes are....

... damper RKI opens and closes automatically. It has a strong spring and can be installed either horizontally or vertically. The flap is suitable for retrofitting, since it is completely inside the duct.
Damper has 2 valves, designed for use in air conditioners (AC), dryers, exhaust, extractor or range hoods, heating ducts, vents and other HVAC applications.
INSTALLATION: The backflow flap is installed by inserting it into the ventilation pipe until it stops. The position of the spring should be horizontal for horizontal installations so that it can open and close optimally. The Backdraft shutter is installed so that the damper blades open only in the outflowing air direction..
The backflow flap opens and closes automatically at low air volumes. It has a smooth-running spring and an internal foam strip to keep the blades from rattling and can be installed horizontally or vertically.
Back draught valves can be inserted into ventilation ducts which are flexible or non flexible. Cannot be used with plastic ducts as the sizes are different..

Exhaust duct designed with butterfly damper for maximum airflow and energy conservation.

Special design: backdraft damper has a smooth-running spring and an internal foam strip to keep the blades from rattling.
Reliable materials: galvanized steel damper is made of quality galvanized steel, the flap leaves are made of aluminum, and the axis and spring are....
Easy to install: the backflow flap is installed by inserting it into the ventilation pipe until it stops.
Wide range of usages: these draft blocker set can be widely applied in ACs, exhaust fans, extractors, range hoods, heating ducts, vents and other....
Package includes: the package comes with 1 piece backdraft damper and 2 pieces duct clamps.
The backdraft damper is about 3.46 inches long, 3.9 inches....

... damper RKI opens and closes automatically. It has a strong spring and can be installed either horizontally or vertically. The flap is suitable for retrofitting, since it is completely inside the duct.
Damper has 2 valves, designed for use in air conditioners (AC), dryers, exhaust, extractor or range hoods, heating ducts, vents and other HVAC applications.
INSTALLATION: The backflow flap is installed by inserting it into the ventilation pipe until it stops. The position of the spring should be horizontal for horizontal installations so that it can open and close optimally. The Backdraft shutter is installed so that the damper blades open only in the outflowing air direction..
The backflow flap opens and closes automatically at low air volumes. It has a smooth-running spring and an internal foam strip to keep the blades from rattling and can be installed horizontally or vertically.
Back draught valves can be inserted into ventilation ducts which are flexible or non flexible. Cannot be used with plastic ducts as the sizes are different. Size: 4'' Inch.

8″ Universal Automatic Make-Up Air Damper with Pressure Sensor Kit.
Interlocked make-up air damper systems meet IRC Code requirements for make-up air with range hoods over 400 CFM.
Interlocked make-up air systems avoid wasted energy associated with barometric solutions and do not let unwanted air into the home during heating or cooling activities so air pressure is equalized for a well-balanced environment.
Fresh air wall caps are required for use with Make-Up Air Dampers.
Interlocked make-up air dampers provide outside air when required to keep the air in the home fresher by allowing the range hood to operate at optimum levels.
Balance indoor air pressure by providing interlocked make-up air without requiring a direct wire connection between the range hood and the damper.
Instead a sensor is attached to the exhaust duct to detect if the range hood is operating.
Slave dampers (MD6S, MD8S or MD10S) are interlocked to the main automatic or universal make-up air damper and open in unison for synchronized operation..