The EF-12 can be operated using the Tjernlund SC-1 variable speed controller. This variable speed controller, model SC-1, is available for purchase directly from the manufacturer.
Tjernlund Duct Booster Fan, 12in., 875 CFM, Model# EF-12

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Shipping:
Factory shippedStore Pickup:
Not available - online only
- Easily installed in metal or flex ducting
- Suitable for air temperatures up to 150°
- Permanently lubricated shaded pole
- 24-g. galvanized steel housing, aluminum prop fan
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Description
Key Specs
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Q & A
Warranty
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Product Summary
What's Included
- (1) Fan
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Features + Benefits
- Easily installed in metal or flex ducting
- Suitable for air temperatures up to 150°
- Permanently lubricated shaded pole
- 24-g. galvanized steel housing, aluminum prop fan
Key Specs
| Attribute | Specification |
|---|---|
item# | 517517 |
Brand | Tjernlund |
Manufacturer's Warranty | 1 year limited warranty |
Ship Weight | 11.1 LB |
Air Delivery | 875 cfm |
| Attribute | Specification |
|---|---|
Outdoor Rated | No |
Horsepower | 0.04 HP |
Volts | 120 |
Fan Diameter | 12 in |
Speeds (qty.) | 1 |
Reviews
Questions & Answers
Questions
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· 7 days ago
Can this be used with a fan speed control to slow the rpm? I don’t need that high cfm, but want to use it in a 12” duct
1 answer-
ProductExpert29· 4 days ago
Helpful?
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· 4 years ago
Does this have to be on a dedicated circuit? Also can it be on a 15amp or does it require 20 circuit?
1 answer-
ProductExpert11· 4 years ago
The wiring of the fan must be a 14 AWG wire and should be protected by an overcurrent protection (fuse or circuit breaker) rated at 15 amps or less.
Helpful?
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· 5 years ago
Does this come with the Tube too? and how long is the tube?
1 answer-
ProductExpert11· 5 years ago
The booster fan does not come with the duct work. The overall dimensions are 15.75" L x 12" W x 13.75" H.
Helpful?
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Anonymous· 5 years ago
is this motor sealed . i am thinking of using in a paint booth
1 answer-
ProductExpert6· 5 years ago
The motor on this duct booster fan is not sealed. It would not be recommended to use in a paint booth.
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· 7 years ago
can it tun 24/7?
1 answer-
ProductExpert11· 7 years ago
This booster fan is rated for continuous duty and can run 24/7.
Helpful?
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· 9 years ago
do you sell a pressure switch to turn the fan on automaticily
1 answer-
ProductExpert24· 8 years ago
The pressure switch, item TJPS1503 is available for purchase through our Parts Department at 1-800-657-0516.
Helpful?
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Warranty
Manufacturer's Warranty
1 year limited warranty
Extend Your Warranty Coverage with a Northern Protection Plan (NPP)
Replacement Plan — 1 Year
A Northern Protection Plan is available after adding the product to your shopping cart.
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Specifications
875 cfm
598 cfm
475 cfm
No
No
No
0.04 HP
-
0.01 HP
120
120
120
12 in
-
10 in
1
1
1
-
140
-
-
No
-
-
71 dB
-
-
Gray
-
-
Gray
-
-
3,028 rpm
-
-
Yes
-
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15.0000 lb
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15.5 x 11.25 x 13.5 in
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