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FR 140 Centrif. Inline Fan

6" inline duct fan w/plastic housing, 120V, 1~

Item Number: 411333

• Airflow up to 220 cfm
• Vibration welded seam ensures leak proof housing
• Speed-controllable
• Air stream temperatures up to 140°F
• Not for Radon Mitigation applications!

The FR Series is a versatile inline duct fan. These models can be used for multiple point exhaust, residential and commercial applications, crawl space venting or make-up air supply. They are also widely used as booster fans to move air from one room or area to another. These models are not designed for nor should be used in radon applications.


The fans feature a fully sealed plastic housing.

The housing is joined via a vibration welding process. The process uses transverse, reciprocating motion at the point of contact between the housing’s inlet and outlet pieces. The friction produces heat that melts the thermoplastic material at the interface. The melted material quickly re-solidifies, resulting in a fused, single-piece housing. The fused seam is inherently air tight, very strong and permanent.

An air-tight fan ensures that efficiency is not lost and contaminants are not spilled due to leakage.

The fan can be mounted in outdoor and wet locations. The FR Series features external rotor motors that have proven dependable year after year.

A large electrical wiring enclosure is designed into the fan housing, making electrical installation easier.

Motor protection

Thermal overload protected with automatic reset. The fans can be controlled via a solid state speed controller.


Technical parameters

Norminal data
Voltage (nominal) 120 V
Frequency 60 Hz
Phase(s) 1~
Input power 62 W
Input current 0.53 A
Impeller speed 2,711 r.p.m.
Air flow max 227 cfm
Temperature of transported air max 140 °F
Enclosure class, motor IP44
Insulation class B
Dimensions and weights
Duct dimension; Circular, inlet 6 in.
Duct dimension; Circular, outlet 6 in.
Weight 6.3 lb
Duct connection type Circular
Images Wiring - FR 140 Centrif. Inline Fan - Fantech
CFM Table


0.0" Ps

0.2" Ps

0.4" Ps

0.6" Ps

0.8" Ps

1.0" Ps

1.5" Ps

FR 100








FR 110








FR 125








FR 140








FR 150








FR 160








Images Dimensions - FR 140 Centrif. Inline Fan - Fantech
Model A B C D

FR 140

5 7/8 (149)

11 1/2 (295)

1 1/4 (32)

9 1/4 (234)

FR 150

5 7/8 (149)

11 1/2 (295)

1 1/4 (32)

9 1/4 (234)

FR 160

5 7/8 (149)

11 1/2 (295)

1 1/4 (32)

9 1/4 (234)

Dimensions are in inches (mm)


A centrifugal type exhaust/supply fan specifically designed for moderate size ventilation applications. The fan can be mounted in any angle at any point along the duct work and straight-through air flow design allows easy installation. By using accessory FC type mounting clamps fan can easily be removed from duct work for service. Fans are constructed in accordance with standard dimensions for spiral duct eliminating the need for transition pieces. Fan motors are capable of operating in air stream temperatures up to 140 oF. Motor bearings are permanently sealed, self lubricating ball type. All fans are 100% speed controllable through a decrease in the voltage by using a solid state or transformer type control. All FR Series fans are backed by Fantech’s Five Year Warranty.

Guide Specifications for Model FR Inline Duct Fans

Supply, exhaust or return air inline fans shall be of the centrifugal, direct driven type.


Fan housing shall be constructed of UV resistant, flame retardant Polycarbonate (PC) thermo plastic.

Fan housing shall be a single piece casing formed by the joining of inlet and outlet pieces via a vibration welding process. The joining process shall not utilize mechanical fasteners, caulk or adhesive, and the seam where the pieces were joined shall be permanent and inherently leak free.

Capacitor shall be provided and shall be located within the fan electrical terminal box for easy access. Electrical terminal box is water tight.


Motorized impeller shall be an external rotor type, class B insulation, totally enclosed PSC Type for maximum efficiency.

Motor shall be a permanently sealed self lubricating ball bearing type.

Motor shall be equipped with automatic reset thermal overload protection.

Motor shall be acceptable for continuous duty.

Sufficient service factor shall be provided to ensure long maintenance free operation over maximum load conditions.


Fan wheel shall be of the backward inclined centrifugal type with a well designed inlet venturi for maximum performance.

Motorized impeller shall be both statically and dynamically balanced as one integral unit to provide for vibration free performance.


Fan air flow performance shall be certified by HVI and licensed to bear the HVI Tested/Certified Performance Logo.

Code Approval

Fan shall be certified by UL for safety.

FR Series shall be manufactured under the authority of Fantech, Inc., Lenexa, KS.

FC 6 Mounting Clamps (2 pcs) - Fantech Item Number: 411120 FC 6 Mounting Clamps (2 pcs)

Mounting Clamps, 6" (2 pcs)

HS 6W External Louver Exhaust - Fantech Item Number: 45153 HS 6W External Louver Exhaust

6" duct plastic louver for exterior wall mount

IR 6 Iris Damper - Fantech Item Number: 411236 IR 6 Iris Damper

6" iris damper w/manual adjuster

LD 6 Silencer - Fantech Item Number: 411284 LD 6 Silencer

for 6" circular ducts, 2" insulation, rubber gaskets

RSK 6 Backdraft Damper - Fantech Item Number: 411114 RSK 6 Backdraft Damper

6" Back-draft damper for circular duct, single

VT20A Pgrm Fan Aux Ctrl - Fantech Item Number: 45385 VT20A Pgrm Fan Aux Ctrl

Push-button auxiliary control for multiple bathrooms

VT20M Pgrm Fan Main Ctrl - Fantech Item Number: 45386 VT20M Pgrm Fan Main Ctrl

Push-button main control with 20 minute boost

WC 15 Speed Control (5A) - Fantech Item Number: 411102 WC 15 Speed Control (5A)

Speed control, w/on-off switch 120V, 5A