This product has been discontinued
This product was replaced by  DBF 4XL Duct Booster Fan
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DBF 4XL Dryer Exhaust Fan

DBF 4XL Dryer Exhaust Fan

Item Number: 40095

• Dryer exhaust fan

• Galvanized steel housing

• Backward inclined blades of the motorized impeller allow lint to pass through the fan

• Pressure switch to automatically activate the fan when the dryer is on

• The fan can be used to effectively maintain dryer exhaust in duct runs up to 130 feet

• Performance certified by HVI; safety certified by ETL to UL507

The Fantech model DBF 4XL Dryer Exhaust Fan has been specially designed to solve the problems caused by long duct runs on clothes dryers. According to dryer manufacturers and some local building codes, dryer exhaust assistance should be added in the dryer duct run when the length of the duct exceeds 24 feet with no bends, 20 feet with one bend or 15 feet with two bends.

When the dryer is on, Fantech's patented pressure sensing switch automatically turns the fan on. The warm, moist air in the dryer is exhausted out of the building quickly. The dryer exhaust fan monitors the status of the dryer and will turn itself off when the dryer stops.

Technical parameters

Norminal data
Voltage (nominal) 120 V
Frequency 60 Hz
Phase(s) 1~
Input power 65 W
Input current 0.54 A
Impeller speed 2,175 r.p.m.
Air flow max 188 cfm
Temperature of transported air max 140 °F
Enclosure class, motor IP44
Insulation class B
Dimensions and weights
Duct dimension; Circular, inlet 4 in.
Duct dimension; Circular, outlet 4 in.
Weight 7.5 lb
Duct connection type Circular
Model A B C D E F G H I


9 3/4 (248)

3 3/4 (95)

3 7/8 (98)

6 15/16 (176)

3 7/8 (98)

2 (51)

1 (25)

3 (76)

2 (51)

Dimensions are in inches (mm)

DBLT4W Secd Lint Trap - Fantech Item Number: 46000 DBLT4W Secd Lint Trap

4" lint trap for dryer exhaust ducts

FC 4 Mounting Clamps (2 pcs) - Fantech Item Number: 411295 FC 4 Mounting Clamps (2 pcs)

Mounting Clamps, 4" (2 pcs)