18 In. Heavy Duty Exhaust Fan, High Performance Totally Enclosed Motor
18 In. Heavy Duty Exhaust Fan, High Performance Totally Enclosed Motor is backordered and will ship as soon as it is back in stock.
- Provides ventilation by moving air up to 3,000 CFM
- Fully assembled with plug-in design
- Uses a rough opening of 20.75" x 20.75"
- Reinforced rust-resistant galvanized steel housing with removable interior grille
- Pre-drilled holes on flange and rolled flange edges for safe and easy installation
- Automatic shutter with added louver stiffeners prevents drafts from entering through the external opening
- OSHA compliant grille and totally enclosed, energy efficient PSC motor
- 7.5 ft. power cord with 3-prong plug. Requires 10 sq. ft. of NFA intake
- Not intended to exhaust hazardous fumes or chemicals.
- 1-year limited warranty
Couldn't load pickup availability
Product Description
The Maxx Air Rugged® Series Exhaust Fans can be used in a garage, barn, greenhouse, warehouse, and a variety of other agricultural and industrial locations to quickly remove unwanted odors, dust and humidity, and refresh stale or warm air in your space. This ventilation fan is constructed of a sturdy, reinforced 20 gauge steel housing with improved aluminum louvered shutter for an even tighter closure than before, a safety grille and a totally enclosed, thermally protected motor. Arrives fully assembled, just mount to your desired building wall and plug in to your nearest 120V outlet to complete installation.
Features and Benefits
- Provides ventilation by moving air up to 3,000 CFM
- Fully assembled with plug-in design
- Uses a rough opening of 20.75" x 20.75"
- Reinforced rust-resistant galvanized steel housing with removable interior grille
- Pre-drilled holes on flange and rolled flange edges for safe and easy installation
- Automatic shutter with added louver stiffeners prevents drafts from entering through the external opening
- OSHA compliant grille and totally enclosed, energy efficient PSC motor
- 7.5 ft. power cord with 3-prong plug. Requires 10 sq. ft. of NFA intake
- Not intended to exhaust hazardous fumes or chemicals.
- 1-year limited warranty
Automatic Shutter
The integrated exterior shutter automatically opens and closes with the fan's operation. When closed, this shutter is designed to ward off pests and keep out drafts, rain, and snow from the outside environment.
Fully Assembled
Each exhaust fan in this series arrives fully assembled and ready to install in your chosen space. Pre-punched mounting holes and rolled flange edges for handling protection make sure your install is perfect and is completed without a hitch. No special tools are required to complete installation!
Creates a Healthier Environment
Whether it's generating airflow in a factory or barn, controlling the temperature in a greenhouse, or removing dusty air from a car garage, our exhaust fan line is ready to perform and offer you precise control over your working and living environment.
Specifications
- Primary Color
-
Mill
- CFM
-
Up to 3,000
- Material Details
-
20 Gauge Galvanized Steel Housing, Aluminum Shutter
- Motor Details
-
1-Speed Totally Enclosed PSC Motor
- Motor Specs
-
3/10 HP
5.34 Amps
120 V, 60 Hz
640 Watts
1,100 RPM
- Dimensions
-
24.1 in. H x 24.1 in. W x 13.1 in. D
Rough Opening: 20.75 in. H x 20.75 in. W
- Unit Weight
-
36 lbs.
- Box Dimensions
-
28 in. H x 25 in. W x 15 in. D
- Alias SKU(s)
-
IF18
IF18UPS: Plain carton - Multi UPC Info
-
IF18: 047242642469; 047242642551 (QTY 12)
IF18UPS: 047242642520; 047242990034 (QTY 12) - Country of Origin - Assembly
-
US from Domestic and Imported Components
- Sold Under
- Maxx Air
Warranty & Certifications
Downloads
Frequently Asked Questions
How do I size an exhaust fan for a room or shop?
To size an exhaust fan, first calculate the cubic volume of the space by multiplying length × width × ceiling height. This gives the total cubic feet of air inside the room.
Next, determine how often the air should be replaced. Workshops, garages, and warehouses typically need a full air exchange every 2–5 minutes, while greenhouses or hot industrial spaces may require faster ventilation. Divide the total cubic feet by the desired air-change time (in minutes) to determine the required CFM rating. Choosing the correct size ensures heat, stale air and moisture are actually removed instead of recirculated.
How many CFM do I need for a 12 × 12 room?
A 12 × 12 room with an 8-foot ceiling contains about 1,152 cubic feet of air.
For proper ventilation, most workspaces aim for one full air exchange every 2–4 minutes. That means you would typically need between 300 and 600 CFM depending on heat load, humidity, and contaminants. Spaces with tools, vehicles, or equipment producing heat should use the higher airflow range.
What does CFM mean on an exhaust fan?
CFM stands for cubic feet per minute and measures how much air the fan moves out of a space. It is the primary performance rating of an exhaust fan.
Higher CFM removes hot air faster, reduces humidity, and clears dust and odors more effectively. If the CFM is too low for the space, the fan may run continuously but the room will still feel hot or stale. A properly sized Maxx Air fan replaces indoor air with fresh outdoor air to maintain a healthier environment.
Do I need an intake vent when installing an exhaust fan?
Yes. An exhaust fan requires incoming air, often called makeup air, to function properly.
Without an intake opening such as a vent, louver, or open window, the fan cannot move its rated airflow. The building will create negative pressure, airflow will drop, and cooling performance will be reduced. For best results, install intake air on the opposite side of the building from the exhaust fan so fresh air can travel across the entire space.
Where should a wall-mounted shutter exhaust fan be installed?
Wall-mounted shutter exhaust fans should be installed high on an exterior wall because heat naturally rises. This allows the fan to remove the hottest air first and improves overall circulation.
