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Home > Tjernlund Ventilation > Tjernlund Duct Booster Fans > Duct Fan for 6" Flex or Metal Duct 180 CFM

Duct Fan for 6" Flex or Metal Duct 180 CFM

Duct Fan for 6  Flex or Metal Duct 180 CFM
Duct Fan for 6  Flex or Metal Duct 180 CFMDuct Fan for 6  Flex or Metal Duct 180 CFMDuct Fan for 6  Flex or Metal Duct 180 CFM
Item #TJE EF-6
AvailabilityUsually ships in 10 business days
Sale Price$87.00


Duct Fan for 6" Flex or Metal Duct 180 CFM
Model EF-6

Made in the USA!

Your best value for boosting air flow in ducts or for powered air intakes and exhausts. Used as a means of increasing air flow through duct work or as an exhaust fan to vent non-combustible air or fumes from enclosed spaces. The maximum air flow operating temperature for the EF-Series is 150 F. (65 C.) Fan is designed to increase the flow of heated air in warm air heating systems or cooled air in central air conditioning systems.  They may also be installed in the duct work of a gravity warm air furnace.  This model is usually used in branch ducts, not the main supply or "trunk line" duct.


  • Boost air flow in hard to heat or cool rooms
  • Easy installation in both metal and flex duct
  • Quiet smooth operation
  • Heavy gauge housing
  • Better performance, higher velocity (works against higher pressure drops)
  • High temperature rating (150F)
  • Download the Installation Instructions
Duct Booster Fan
Outdoor Air Supply
Lunchroom Exhaust
Spot Ventilation
Soldering/Welding Exhaust
Bathroom Exhaust
Warehouse/Pole Barn Exhaust

Duct Booster Fan
Outdoor Air Supply
Bathroom Exhaust
Spot Ventilation
Crawl Space Exhaust


  Duct Length in Feet

Maximum Air Temp Degrees F

Free Air CFM 25 Feet CFM 50 Feet CFM 75 Feet 150F
180 150 100 90

Table is based on straight metal duct. 90 degree elbows are equivalent to 10 feet of straight duct. Performance is based on 70 degrees F standard air.


Model Unit Dimensions (inches)
EF-6 6 1/2 6 1 5/8 4 3/8 2 5/8

Electrical Data:

  • Volts: 115
  • Amps: .40
  • Watts: 30
  • Phase: 1
  • Hertz: 60
  • Open Drip proof:  Auto
  • Therm. Protection:  Yes
  • RPM: 3000

Warranty:  One year

Question: Can a speed controller be used with this?
Answer: Yes, the 6 inch duct fan can be used with model SC-1 speed controller.

Question: Can a thermostat be used?
Answer: Yes, you can use a line voltage thermostat.
Duct Fan for 6" Flex or Metal Duct 180 CFM

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Duct Airstat senses positive pressure in a forced air heating and/or cooling system. The single pole, single throw, snap-acting switch is activated by a diaphragm with integral pressure probe inserted directly into the duct or plenum. Made in the US!
Sale Price: $79.00
Speed Controller for Duct Boosters
SC-1 is compatible with Duct Airstat (model PS1503) and can be used with Duct Booster fan models EA-5, EF-6 and EF-8. (Face plate fits model EF-6 and EF-8 electrical boxes.) Made in the USA.
Sale Price: $69.00
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