18 In. 2-Speed Modern Whole House Fan with Ceiling Grid
18 In. 2-Speed Modern Whole House Fan with Ceiling Grid
18 In. 2-Speed Modern Whole House Fan with Ceiling Grid

18 In. 2-Speed Modern Whole House Fan with Ceiling Grid

Regular price $909.99 Sale price$759.99
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930 SQ. FT.




This modern 18 in. fan is ideal for use in mild climates during the morning or evening, efficiently pulling in fresh air through open windows and removing hot, stale air from your home through the attic for a more comfortable and refreshing living environment. Unlike a standard whole house fan, our ducted models feature a damper box that is sealed with R5 insulation to prevent heat transfer back into your home, and a 12 ft. duct for maximum ventilation performance and noise reduction. The fan head mounts to an attic rafter with the included hanging bracket for an easier, faster install than a traditional whole house fan. It's a cost-effective solution to improving your indoor air quality while relieving strain on your air conditioning equipment. Upgrade your fan with a wireless hub (XXWREWIFIHUB) to control your unit via a local Wi-Fi connection on most smart devices.


Designed for home spaces up to 930 sq. ft.


No cutting of ceiling joists required. Damper box fits between 16 in. or 24 in. on-center ceiling joists.


2-speed operation with included dual high/low and on/off wall switch


Galvanized steel fan housing and plenum box with R5 insulation

Energy Efficiency:

Save money on your cooling bills and reduce stress on A/C equipment


Requires 535 sq. in. of NFA

Primary Color


Secondary Color




Material Details

Galvanized Steel Fan Housing and Plenum Box

Motor Details

2-Speed Thermally Protected Motor

Motor Specs

Rated for 6 Amps - Draws 5.2 (HI) and 3.1 (LOW) in operation

120 Volts, 60 Hz


Fan: 22.5 in. H x 22.75 in. W x 13.25 in. D

Damper Box: 12 in. H x 23 in. W x 15 in. D

Unit Weight

41.5 lbs.

Box Dimensions

Box 1, Damper: 24.375 in. H x 16.625 in. W x 13.563 in. D

Box 2, Fan: 24.25 in. H x 23.75 in. W x 25.25 in. D

Ship Weight

Box 1: 17 lbs.

Box 2: 46.5 lbs.

Alias SKU(s)

CX1801UPS: Plain carton

Multi UPC Info

CX1801: 047242540215
CX1801UPS: 047242540208

Country of Origin - Assembly

US from Domestic and Imported Components

Other Details

Includes fan, hanging bracket, duct and transition assembly, damper assembly box, intake grille with mounting screws, rafter bracket, and hi/low and on/off switches

Noise: 9.1 sones

Sold Under

Maxx Air, Cool Attic

Our products are shipped via Fedex Ground or LTL Carrier depending on the size and weight of the product. Should you have a special requirement for shipping please contact us at customerservice@usfanco.com or call us to discuss your requirements. You can use the Freight Estimator in the Shopping Cart to determine what the freight cost will be on your item. Freight will be billed at the time of shipment. Due to the nature of the products, we cannot ship via Express or overnight service. Typically orders ship within 5 business days. Upon shipment you will be sent a notification of shipment with the Tracking Number. We reserve the right to recall a shipment for any reason.

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Close-up of fan bracket.

This series is designed to fit between 16 or 24 inch on-center ceiling joists, eliminating the need for cutting and removing a joist during installation. Each fan has a pre-installed hanging bracket on the fan assembly and also includes a rafter bracket to make your install as simple as possible.


Typical whole house fans have a fan unit that sits close to the shutter (and thus your ceiling) when installed. With our new modern whole house fan design, the fan assembly is installed up to 12 feet away from the plenum box with the included duct, all but eliminating noise when in use.

Damper box with duct attached.
Whole house fans use open windows and doors to cool your home.

Whole house fans pull cool air from open windows and doors throughout the house and push stale, warm air upwards to escape through your attic, making them a perfect alternative to an air conditioner in moderate climates. Feel instantly refreshed with this energy-saving cooling measure!

Maxx Air modern whole house fans feature a damper box sealed with R5 insulation. This keeps your treated air just where you need it when the fan’s not in use: in your home, not your attic! This fan head is 22.5 inches high.