KEN BROWN 20 in Shutter Exhaust Fan - High Flow Ventilation

In this review the KEN BROWN 20 in Shutter Exhaust Fan is judged as a practical, heavy duty ventilation option for workshops, garages, attics and greenhouses where strong airflow and simple installation matter most. The single biggest reason to buy is its high airflow capacity paired with a plug-and-play setup: the preinstalled 1.65 m power cord and automatic aluminum shutters make it quick to mount and start moving air without electrical work. For anyone needing to remove heat, dust or humidity from medium to large spaces, this fan delivers dependable performance.

Key Features

• Multipurpose design: Works equally well in attics, workshops, greenhouses and barns to expel heat, moisture and odors from enclosed spaces.
• High airflow: Rated at approximately 3500 CFM, it provides strong ventilation to cool and exchange air in large volumes quickly.
• Corrosion resistant construction: Aluminum shutters and blades resist moisture and high temperature, extending service life in damp or hot environments.
• Automatic aluminum shutters: Gravity-operated shutters open when the fan runs and close when off to limit backdrafts and debris entry.
• Plug-and-use convenience: A 1.65 m power cord is preinstalled so installation requires mounting only, not hard wiring.
• Industrial-grade motor: Runs at about 120 V, 60 Hz with robust RPM for continuous operation in commercial or agricultural settings.

Who It's For

This fan is best for homeowners and tradespeople who need a straightforward way to ventilate garages, workshops, small factories or greenhouses without running new wiring. Its strong airflow and corrosion resistant aluminum parts suit spaces that build up heat, fumes or moisture.

It is less suitable for those needing whisper-quiet residential fans for living rooms or bedrooms, or for installations that demand integrated smart controls; this model focuses on raw airflow and durability rather than low-noise luxury features.

Pros & Cons

Pros

• Very good air movement for the size, making it effective at cooling work areas and venting heat.
• Durable aluminum shutters and blades reduce corrosion risk in moist or hot settings.
• Easy installation with a preinstalled 1.65 m power cord - no wiring required for most users.

Cons

• Motor can run hot during heavy use, so continuous-duty environments should monitor temperature and duty cycle.
• Not optimized for noise-sensitive living spaces; it is designed as a worksite-grade exhaust fan.

Specifications

Diameter	20 in
Airflow	Approx. 3500 CFM
Power cord	1.65 m (5.4 ft) preinstalled
Construction	Aluminum shutters and blades
Voltage / Frequency	120 V, 60 Hz
Speed	About 1309 RPM

Our Verdict

The KEN BROWN 20 in Shutter Exhaust Fan is a practical, value-focused choice for garages, workshops and agricultural buildings where high airflow and durability are priorities. It offers strong ventilation, corrosion-resistant components and quick plug-and-play setup, making it a sensible buy for users who need reliable air movement rather than refined residential aesthetics.

Frequently Asked Questions

Does this fan require wiring?
No, the fan comes with a preinstalled 1.65 m power cord so most installs need only mounting and a nearby outlet.

Can it be used in damp environments?
Yes, the aluminum shutters and blades are corrosion resistant and suitable for moist or warm spaces like greenhouses and barns.

Is it quiet enough for home living areas?
It is designed as an industrial/work fan with strong airflow, so it may be louder than fans intended for bedrooms or living rooms.