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Ventamatic CX302DDWT

30" Direct Drive Fan with Shutter

(2 Reviews)


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The CX302DDWT Whole House Fan will ventilate 2000 to 3000 square feet (on one story only) and provides a great alternative to cooling your home compared to a traditional air conditioner.  Whole house fans draw air in through the windows and exhaust it through the attic.  If air conditioning is installed, it can be turned off any time the outside temperature is at or below the desired temperature in the home.  Since it is just a fan and not a refrigerant-based air conditioning unit, it is much more cost effective to run, costing as little as 1/10th as much to operate compared traditional air conditioning.  Whole house fans are also a great addition to homes with evaporative coolers to provide added air circulation.

Standard Features:

  • Joist-in or joist-out installation
  • Two-speed, thermally protected PSC motor
  • Tough steel motor struts
  • Precision-balanced aluminum fan blade assembly
  • Four fan blades for greater air movement
  • Steel venturi for enhanced durability
  • White, powder-coated shutter
  • High / Low / Off wall switch included
  • UL & C-UL listed
  • 10 Year Limited Warranty

Nominal CFM

The amount of air that can be moved by the fan, measured in cubic feet per minute (cfm).

Nominal CFM
Fan Blade Diameter
30 Inches
Blower Type

There are three main type of blowers: Multi-Speed, High-Efficiency Multi-Speed, and Variable Speed.

Standard Multi-Speed blowers have different speed options and you select the speed that the blower will operate at depending on the function it is performing (ex. different speeds for fan, AC, and heating functions).

High-Efficiency Multi-Speed blowers are designed to maintain a constant torque and in doing so will maintain air-flow and use less electricity.

Variable Speed blowers will adjust their speed during operation. The result is a blower that will run at lower speeds for longer periods of time (this improves the air flow and increases electrical efficiency).

Blower Type
Direct Drive

The amps that the unit is designed to operate at.

3.8 Amps
Blade Type
Opening Dimensions
29 1/2 x 32 1/4 inches