BLACK+DECKER 20 Inch Box Fan Review: 80W Copper Motor and 6 ft. Cord
BLACK+DECKER's BFB20SW is a 20 inch box fan with an 80W copper motor rated at over 1200CFM, three speeds, a carry handle and a 6 ft. cord.
By Daniel Brooks
Updated October 28, 2026
The BLACK+DECKER 20 Inch Box Fan is a slim 20 inch box fan with an 80W copper motor rated at over 1200CFM, three speeds, a carry handle and a 6 ft. cord. For more models, see our Box Fans page.
Our Verdict
This is a dependable, well-built box fan from a familiar brand. The copper motor, slim 4.13 inch body and long cord make it easy to place in a bedroom, doorway or garage.
Its rated airflow is lower than the Hurricane or PELONIS, and controls are a simple dial with no timer.
BLACK+DECKER 20 Inch Box Fan
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Key Specifications
| Feature | Specification |
|---|---|
| Brand | BLACK+DECKER |
| Model | BFB20SW |
| Size | 20 inch |
| Airflow | Over 1200CFM |
| Power | 80W copper motor |
| Speeds | 3 |
| Cord | 6 ft. |
| Weight | 7.05 lbs |
| Dimensions | 20.67 x 4.13 x 21.06 inches |
Design
At 20.67 x 4.13 x 21.06 inches and 7.05 lbs, it is slim enough for a doorway or window frame. Stabilizing plastic feet keep it steady on the floor.
A built-in carry handle and a 6 ft. cord, longer than many budget fans, make it easy to move between rooms. A black version, BFB20SB, is also sold.
Controls
Three speeds, low, medium and high, are set with a mechanical rotary dial.
The copper motor delivers up to 80W of power for over 1200CFM of airflow. There is no timer, remote or thermostat.
Placement Tips
Stand the fan where it can push air across the room toward where you sit or sleep, rather than into a wall or corner. Keep it on a flat, stable surface, and keep the cord out of walkways.
On cool evenings, a box fan facing into the room from an open window pulls in fresh air, and a second fan facing out of a window on the other side of the house pushes warm air out to create a cross breeze.
Running Costs and Care
Box fans use far less power than an air conditioner, so running one all night costs very little. Pairing it with your AC lets you raise the thermostat a little and stay comfortable.
Unplug the fan and wipe dust from the grilles and blades every few weeks during heavy use, since dust cuts airflow and adds noise. Store it clean and dry over winter, ideally in its box or a bag.
How It Compares
Against the Hurricane Classic Box Fan, the BLACK+DECKER lists less airflow but a known brand and a longer cord.
Against the Comfort Zone 20 Inch Box Fan, the BLACK+DECKER costs more but adds a copper motor and a listed airflow figure.
Pros and Cons
| Pros | Cons |
|---|---|
| Copper motor | Lower rated airflow |
| 6 ft. cord | No timer |
| Slim body | Basic dial |
| Known brand | No remote |
| Carry handle | Plastic feet |
Who Should Buy It
| Who Should Buy It? | Who Should Look Elsewhere? |
|---|---|
| Garages | Maximum airflow |
| Basements | Timer seekers |
| Bedrooms | Quiet sleepers who want variable speed |
| Doorway use | Heavy-duty shops |
For more options, see our picks for the best box fans under 50 and the best box fans for garages.
Final Verdict
The BLACK+DECKER 20 Inch Box Fan is a well-made, easy-to-place box fan from a trusted brand. You can check the current price and details for the BLACK+DECKER 20 Inch Box Fan.
Frequently Asked Questions
How powerful is the BLACK+DECKER box fan?
It has an 80W copper motor rated at over 1200CFM.
How long is the cord?
6 ft.
How much does it weigh?
7.05 lbs.
How many speeds does it have?
Three.
Is there a black version?
Yes, model BFB20SB.
About the author
Daniel Brooks is a home cooling editor at WikiCooling, covering window, portable, through-the-wall and mini-split air conditioners, fans, and dehumidifiers. He researches cooling capacity, energy efficiency, noise levels, installation requirements, and buyer feedback to help homeowners choose the right unit for their room size, climate, and budget.