ReviewsInk Damper

Draft Blocker - 4'' Inch Backdraft Damper Duct - Draft Stopper - Backflow Preventer - Inline Fan Vent - Vent Deflector (4'' Inch)

Back draft damper is made for insertion into inch ventilation ducts. The backflow 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 ....

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..

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..

PRODUCT FEATURES This 4inch damper vent air blocker does what it is designed to do. It prevents outside air from entering back into your house via dryer, bathroom fan, and grow tent. You will be very pleased with the quality, functionality, value, and ease of installation of this product..
EASY INSTALLATION The 4 inch backflow preventer is easy to install. You will only cram these in the 4" duct and the rubber flap will seal off drafts coming in from your dryer vent or bathroom exhaust fan. Make sure the flaps open away from the ventilator. The outer rubber ring creates a seal around the strong plastic body giving you the perfect vent damper..
FLEXIBLE This backdraft damper's main recycled plastic part is small enough to fit into almost all PVC, metal, and other ducts with 4 inch size. No need to buy multiple products to find the one that works. Purchase with ease and relax in your draft free living space..
CONVENIENT This 4 inline damper duct valve gummi flaps are easy to open for almost all dryers or booster fans. The lack of moving spring will ensure a long lifespan that will save you time and money. As the product ....

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 pull is made from cast iron with a solid brass handle..
Brass handle features engraved sides that indicate whether the damper is opened or closed..

Converts dual damper rod and damper rod/cartridge forks to high-performance cartridge forks.
Contains a pair of high-performance, gas-charged mono-tube fork cartridges.
Improves resistance to front brake dive, front end stability, cornering and bottoming control.
Add direct internal component replacement.

Kit Contains: Three Damper Blades, A Damper Control Rod, Split-Drive Connections.