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Air King 40-120 CFM D4 Series Exhaust Fan

Full View
Full View
Inside View 1
Inside View 1
Inside View 2
Inside View 2
Duct Collar
Duct Collar
Performance Chart
Performance Chart
Step 1: Choose Bathroom Fan
Step 2: Order Optional Accessories: Control Switch Click here

$288.22 - $320.87
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  • Air King 30-130 CFM DC Constant Flow Motor/ Motion/ Humidity Sensing/ LED
  • Available Options:
    • Speed: Single , Dual
    • Combination: Constant Flow Motor; Constant Flow Motor, Humidity Sensing
  • White grill matches any décor
  • Durable 23-Gauge galvanized steel housing provides years of worry free operation
  • Almost silent motor operates at less than 03 Sones
  • 30 to 130 CFM exhaust reduces moisture to prevent mildew
  • 30 to 130 CFM at less than 03 Sones
  • Variable speed for almost all residential bathrooms
  • Uses (1) 8-Watt LED lamp included and (1) 4-Watt bulb for nightime lighting
  • UL listed for use above the shower
  • Energy efficient DC motor maintains CFM ratings across multiple static pressures and is suitable for continuous operation
  • UL listed for installation over a tub or shower on a GFCI circuit
  • 6'' round duct connector with gasketed damper protects against backdrafts and seals the duct better than any other damper on the market today
  • Side access panel allows you to wire the fan from inside or outside the housing
  • Easily installs using the included adjustable hanging brackets
  • Can be used to comply with ASHRAE 622 standards as well as California title 24
  • HVI Certified performance
  • Energy Star approved

Model No.CFM:Sones:Number of Speeds:Maximum Fan Watts:Duct Size:Sound Level:Energy Star Certified:HVI Certified:
AK-D4S Series40-120<0.3 - 0.317.36''Very QuietYesYes
Ak-D4D Series40-120<0.3 - 0.327.36''Very QuietYesYes


Perfect for standard to larger sized bathrooms, the 6'' round duct collar ensures proper air flow making it an ideal solution to comply with ASHRAE 62.2 exhaust as well as California Title 24 and CalGreen. The D4 series from Air King provides the most efficient operation on the market today and is recognized as an ENERGY STAR Most Efficient 2017.


(W = side to side) (D = front to back) (H = top to bottom)

Overall Size: 14-7/16''W x 14-7/16''D x 9-7/8''H
Fan Housing Size: 12-3/4''W x 12-7/8''D x 9-7/8''H
Bottom Grill Size: 14-1/4''W x 14-1/4''D
Ship Method:

    Ships via UPS/FedEx Ground

This item(s) is also sometimes listed under the following manufacturer numbers:

Air KingAir King
D4S, D4SH, D4D

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