Dampers

Master Flow Dampers balance and adjust the air flow in individual runs of round pipe in HVAC systems. The dampers include hardware that makes it easy to install into existing round pipe as well. They are constructed of galvanized steel for durability. Only one wing nut is required for installation.

• Galvanized steel construction
• Spring-loaded hardware for easy mounting into existing round pipe
• Helps to control airflow in a run of pipe
• Always insulate ductwork for greater system efficiency and comfort

Circulate warm or cool air from one room to another using this Thru Wall Room to Room Transfer Fan. This fan's telescoping housing accommodates wall depths of 3-3/4 in. - 6-1/2 in. Equipped with 2-speed options and Airflow Adaptor plates to give you four airflow settings. This fan allows you to adjust the air transferring power to quickly change or maintain temperatures in adjoining rooms. The fan's grille can be painted to match your interior style.

• Use in conjunction with PTAC units, mini-splits, fireplaces, wood stoves and window air conditioning units to avoid micro-climates in your house
• Accommodates wall depths of 3-3/4 in. - 6-1/2 in. for installation versatility
• With the airflow adapter plates and the 2-speed fan motor you get four different CFM's, low = 90, med-low = 105, med-high = 115, and high = 130, please see the data sheet for the turns per room size to really tailor the airflow to your specific requirements
• Fan airflow exhausts on the switch side, see airflow image in the alternate pictures above
• Paintable grille to custom match your interior style
• Sones = 3 on high and 2.6 on low dBA high speed = 54 and low speed = 52.2
• UL Listed for safety

The Inductor 5 in. Corded In-Line Duct Fan is engineered to overcome back pressure and boost air in forced air heating and cooling systems without upsetting the balance in the closed loop system. The DB205C boosts airflow in ducts with low air delivery to improve comfort and energy efficiency. If you have rooms that are too hot or too cold due to poor airflow, this is an efficient and economical solution.

• UL listed E227633 heating and cooling equipment UL 1995 and CSA C22.2 no. 236
• 75 CFM free air to maximum boosted air 130 CFM
• Thermally protected class B motor with automatic reset thermal fuse, 30 running watts, 0.35 startup Amp, 120 VAC, 60 Hz
• Engineered polycarbonate blade to minimize noise and vibration
• 6 ft. heavy duty SJT 3 conductor 18-Gauge grounded cord
• Crimp and bead on 1 end for easy installation
• Installs in any position
• Corrosion-resistant galvanized metal
• Installation screws included
• Plugs right into the DuctStat, model DS100, (sold separately) for automatic temperature controlled on/of operation

The Inductor 12 in. Corded In-Line Duct Fan is engineered to overcome back pressure and boost air in forced air heating and cooling systems without upsetting the balance in the closed loop system. The DB212C boosts airflow in ducts with low air delivery to improve comfort and energy efficiency. If you have rooms that are too hot or too cold due to poor airflow, this is an efficient and economical solution.

• UL listed E227633 heating and cooling equipment UL 1995 and CSA C22.2 no. 236
• 650 CFM free air to maximum boosted air 800 CFM
• Thermally protected class B motor with automatic reset thermal fuse, 120 running watts, 1.50 startup Amp, 120 VAC, 60 Hz
• Polycarbonate fan blade to minimize noise and vibration
• 6 ft. heavy duty SJT 3 conductor 18-Gauge grounded cord
• Crimp and bead on 1 end for easy installation
• Installs in any position
• Corrosion-resistant galvanized metal
• Installation screws included
• Plugs right into the DuctStat, model DS100, (sold separately) for automatic temperature controlled on/of operation

The Inductor 10 in. Corded In-Line Duct Fan is engineered to overcome back pressure and boost air in forced air heating and cooling systems without upsetting the balance in the closed loop system. The DB210C boosts airflow in ducts with low air delivery to improve comfort and energy efficiency. If you have rooms that are too hot or too cold due to poor airflow, this is an efficient and economical solution.

• UL listed E227633 heating and cooling equipment UL 1995 and CSA C22.2 no. 236
• 300 CFM free air to maximum boosted air 650 CFM
• Thermally protected class B motor with automatic reset thermal fuse, 120 running-Watt, 1.50 startup Amp, 120 VAC, 60 Hz
• Engineered aluminum blade to maximized airflow and minimize noise and vibration
• 6 ft. heavy duty SJT 3 conductor 18-Gauge grounded cord
• Crimp and bead on 1 end for easy installation
• Installs in any position
• Corrosion-resistant galvanized metal
• Installation screws included
• Plugs right into the DuctStat, model DS100, (sold separately) for automatic temperature controlled on/of operation

The Duct Muffler 10 in. In-Line Noise Muffler reduces noise from fans and carbon filter systems. Excellent noise reduction for HVAC systems, fans and hydroponics applications. Reduce noise traveling through duct work the Duct Muffler In-Line Noise Muffler reduces noise heard through registers from adjacent rooms or noisy neighbors. Does Not Restrict Airflow through duct. Maintenance free and easy to install.

• Acoustic liner UL Listed, class 1 air duct
• Building code compliant, meets NFPA standards 90A and 90B
• Fits 10 in. flex or metal duct
• 1-year limited warranty
• Available in 6 in., 8 in., 10 in. and 12 in. Dia

The DuctMuffler 6 in. In-Line Noise Muffler reduces noise from fans and carbon filter systems. Excellent noise reduction for HVAC systems, fans and hydroponics applications. Does Not Restrict Airflow through duct. Maintenance free and easy to install.

• Fits 6 in. flex or metal ducts
• Meets NFPA standards 90A and 90B
• Acoustic liner UL Listed, class 1 air duct
• Building code compliant

The Inductor 8 in. Corded In-Line Duct Fan is engineered to overcome back pressure and boost air in forced air heating and cooling systems without upsetting the balance in the closed loop system. The DB208C boosts airflow in ducts with low air delivery to improve comfort and energy efficiency. If you have rooms that are too hot or too cold due to poor airflow, this is an efficient and economical solution.

• UL listed E227633 heating and cooling equipment UL 1995 and CSA C22.2 no. 236
• 210 CFM free air to maximum boosted air 500 CFM
• Thermally protected class B motor, 55 running Watt, 0.70 startup Amp, 120 VAC, 60 Hz
• Engineered polycarbonate blade to minimize noise and vibration
• 6 ft. heavy duty SJT 3 conductor 18-Gauge grounded cord
• Crimp and bead on 1 end for easy installation
• Installs in any position
• Corrosion-resistant galvanized metal
• Installation screws included
• Plugs right into the DuctStat, model DS100, (sold separately) for automatic temperature controlled on/of operation

The ZoneMaster Motorized Adjustable Damper controls airflow in an HVAC system or fresh air intake. Available as power closed/spring return or power open/spring return. Adjustable close or open position range stops. Easy to wire, 2-wire installation. Save energy by controlling airflow.

• UL Listed 24-Volt 15VA stud mount transformer included
• 24 VAC, 1 RPM, 60 Hz, 6-Watt 2 wire synchronous hysteresis motor
• 20-Gauge blade closes against gasket for minimal leakage
• Freewheeling coupling for long life
• Male crimped and female non-crimped ends to connect to rigid or flexible round duct
• Customize airflow and temperature throughout your home
• Provides improved comfort and energy savings

The ZoneMaster Motorized Adjustable Damper controls airflow in an HVAC system or fresh air intake. Available as power closed/spring return or power open/spring return. Adjustable close or open position range stops. Easy to wire, 2-wire installation. Save energy by controlling airflow.

• Safe, UL listed 24 VAC/ 20 VA plug-in transformer included
• 24 VAC, 1 RPM, 60 Hz, 6-Watt 2 wire synchronous hysteresis motor
• 20-Gauge blade closes against gasket for minimal leakage
• Freewheeling coupling for long life
• Male crimped and female non-crimped ends to connect to rigid or flexible round duct
• Customize airflow and temperature throughout your home
• Provides improved comfort and energy savings

The ZoneMaster Motorized Adjustable Damper controls airflow in an HVAC system or fresh air intake. Available as power closed/spring return or power open/spring return. Adjustable close or open position range stops. Easy to wire, 2-wire installation. Save energy by controlling airflow.

• UL Listed 24-Volt 15VA stud mount transformer included
• 24 VAC, 1 RPM, 60 Hz, 6-Watt 2 wire synchronous hysteresis motor
• 20-Gauge blade closes against gasket for minimal leakage
• Freewheeling coupling for long life
• Male crimped and female non-crimped ends to connect to rigid or flexible round duct
• Customize airflow and temperature throughout your home
• Provides improved comfort and energy savings

The ZoneMaster Motorized Adjustable Damper controls airflow in an HVAC system or fresh air intake. Available as power closed/spring return or power open/spring return. Adjustable close or open position range stops. Easy to wire, 2-wire installation. Save energy by controlling airflow.

• UL Listed 24-Volt 15VA stud mount transformer included
• 24 VAC, 1 RPM, 60 Hz, 6-Watt 2 wire synchronous hysteresis motor
• 20-Gauge blade closes against gasket for minimal leakage
• Freewheeling coupling for long life
• Male crimped and female non-crimped ends to connect to rigid or flexible round duct
• Customize airflow and temperature throughout your home
• Provides improved comfort and energy savings

The Centrasense 4 in. DEDPV Clothes Dryer Booster Fan Kit is designed to mitigate underperforming electric dryer duct systems while conforming to the highest standards for performance, safety and error notification. The clothes dryer booster fan provides shorter drying time. It also provides less wear and tear on the dryer as well as reduced lint buildup inside dryer and duct.

• UL705 Dryer Exhaust Duct Power Ventilator (DEDPV) performance certified
• Meets the IRC2015 building code
• ETL listed
• Our unique system uses a low-voltage clip-on current sensor for reliable dryer interlock with minimal installation effort and time
• Auto on and off function allows for maximum efficiency
• Shorter drying time and reduced lint build-up
• Clean-out sleeves included to make periodic cleaning quick and easy
• Only DEDPV fan kit on the market to synchronize its operation without periodic interruption, extra calibration cycles or extended run-time
• Only DEDPV fan kit in the market that can be installed in any orientation
• For use in a duct with a total equivalent length of 25 ft. to 100 ft.
• 5-year limited warranty

Zone master motorized adjustable damper controls airflow in an HVAC system or fresh air intake. Available as power closed/spring return or power open/spring return. Adjustable close or open position range stops. Easy to wire, 2-wire installation. Save energy by controlling airflow.

• Safe, ul listed 24 vac/ 20 va plug-in transformer included
• 24 vac, 1 rpm, 60hz, 6-watt 2 wire synchronous hysteresis motor
• 24 vac, 1 rpm, 60hz, 6-watt 2 wire synchronous hysteresis motor
• Widely used in drinking system and coastal cities
• Male crimped and female non-crimped ends to connect to rigid or flexible round duct
• Customize airflow and temperature throughout your home
• Provides improved comfort and energy savings

The Inductor 16 in. in-line 4 pole Duct Fan keeps you comfortable year round and improves the efficiency of your heating and cooling system. This corrosion resistant fan fits 16 in. flexible and rigid ducts and features a crimp and bead design on one end for easy installation. The thermally protected Class B motor will not overheat and is built to be quiet and dependable for years to come.

• Fan is designed to efficiently boost airflow; when used as a booster fan the max boosted CFM is 1760, free air CFM is 1100
• For best performance and most quiet operation, it is recommended that you install your in-line duct fan 6 to 8 ft. from the register
• Can be installed at any angle
• Solves air delivery problems without major system rework or expense
• Do not expose your inductor to temperatures above 140 degree
• Saves on utility bills year round
• 4-pole thermally protected motor, 180 running watt, 1.57 startup Amp, 120 VAC, 60 Hz

The ZoneMaster Motorized Adjustable Damper controls airflow in an HVAC system or fresh air intake. Available as power closed/spring return or power open/spring return. Adjustable close or open position range stops. Easy to wire, 2 wire installation. Save energy by controlling airflow.

• Safe, UL listed 24 VAC/ 20 VA plug-in transformer included
• 24 VAC, 1 RPM, 60 Hz, 6-Watt 2 wire synchronous hysteresis motor
• 20-Gauge blade closes against gasket for minimal leakage
• Free wheeling coupling for long life
• Male crimped and female non-crimped ends to connect to rigid or flexible round duct

Circulate warm or cool air from one room to another using this ThruWall Pro Room to Room Fan. Hardwired unit is often used in conjunction with PTAC units, mini-splits, fireplaces, wood stoves, window air conditioning units and other heating and cooling systems. Airflow output is on the switch side of the fan. Telescoping housing installs in frame walls from 4 in. to 6-1/2 in. thick. Variable speed fan allows you to adjust the air transferring power to quickly change or maintain temperatures in adjoining rooms. The fan's grille can be painted to match your interior style.

• Rotating grille allows airflow direction to be changed for comfort
• Hardwire
• Cutout dimension: 11.5 in. x 8.5 in., template included
• Back grille diameter: 10 in.
• Adjustable variable speed fan, airflow range is 40 CFM at lowest speed to 110 CFM on highest. Airflow output is on the switch side
• Quiet operation
• Sones = 3 and dBA on high = 55 on low less than or equal to 49

The ZoneMaster Motorized Adjustable Damper controls airflow in an HVAC system or fresh air intake. Available as power closed/spring return or power open/spring return. Adjustable close or open position range stops. Easy to wire, 2 wire installation. Save energy by controlling airflow.

• Safe, UL listed 24 VAC/ 20 VA plug-in transformer included
• 24 VAC, 1 RPM, 60 Hz, 6-Watt 2 wire synchronous hysteresis motor
• 20-Gauge blade closes against gasket for minimal leakage
• Free wheeling coupling for long life
• Male crimped and female non-crimped ends to connect to rigid or flexible round duct

The Inductor 6 in. In-Line Duct Fan keeps you comfortable year round and improves the efficiency of your heating and cooling system. Connect either high or low speed. This corrosion resistant fan fits 6 in. flexible and rigid ducts and features a crimp and bead design on both ends for easy installation. The thermally protected Class B motor will not overheat and is built to be quiet and dependable for years to come.

• Duct booster fan is designed to efficiently boost airflow; when used as a booster fan the max boost CFM is 300, free air CFM is 160/180
• For best performance and most quiet operation, it is recommended that you install your in-line duct fan 6 ft. to 8 ft. from the register
• Engineered for maximum boost and quiet operation
• Do not expose your Inductor to temperatures above 140 degree
• Can be installed at any angle
• Thermally protected class B motor, 30 running watt, 0.35 startup amp, 120 VAC, 60 Hz

The ZoneMaster Motorized Adjustable Damper controls airflow in an HVAC system or fresh air intake. Available as power closed/spring return or power open/spring return. Adjustable close or open position range stops. Easy to wire, 2 wire installation. Save energy by controlling airflow.

• Safe, UL listed 24 VAC/ 20 VA plug-in transformer included
• 24 VAC, 1 RPM, 60 Hz, 6-Watt 2 wire synchronous hysteresis motor
• 20-Gauge blade closes against gasket for minimal leakage
• Free wheeling coupling for long life
• Male crimped and female non-crimped ends to connect to rigid or flexible round duct

The DuctMuffler 8 in. In-Line Noise Muffler reduces noise from fans and carbon filter systems. Excellent noise reduction for HVAC systems, fans and hydroponics applications. Does Not Restrict Airflow through duct. Maintenance free and easy to install.

• Meets NFPA standards 90A and 90B
• Acoustic liner UL Listed, class 1 air duct
• Building code compliant
• Fits 8 in. flex or metal ducts
• Available in 6 in., 8 in., 10 in. and 12 in. Dia

The DuctMuffler 12 in. In-Line Noise Muffler reduces noise from fans and carbon filter systems. Excellent noise reduction for HVAC systems, fans and hydroponics applications. Reduce noise traveling through duct work the DuctMuffler In-Line Noise Muffler reduces noise heard through registers from adjacent rooms or noisy neighbors. Does Not Restrict Airflow through duct. Maintenance free and easy to install.

• Acoustic liner UL Listed, class 1 air duct
• Building code compliant, meets NFPA standards 90A and 90B
• Fits 12 in. flex or metal duct
• 1-year limited warranty
• Available in 6 in., 8 in., 10 in. and 12 in. Dia