ALLEGRO · Air mover · Medium airflow

Allegro 9539-12 Axial Blower

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2,180 CFMon high
12-inchblade

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Is 2,180 CFM enough for my room?Compare this fan

Specs cited from Amazon listing ↗Photos: Amazon listing ↗ · refreshed Oct 31, 2026

Allegro 9539-12 Axial Blower is an air mover; 12-inch format, listed at 2,180 CFM.

What works

2,180 CFM on high from a 12-inch blade

What doesn't

No published noise (dBA) rating

Who it's for

Good fit

targeted drying or directed airflow tasks

Look elsewhere if

Permanent building ventilation, which needs a fixed exhaust fan

A good fit for your job? Check the current price and delivery.

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Allegro 9539-12 Axial Blower suits targeted drying or directed airflow tasks. Plan outlet direction, cord routing, and any required ducting for the job.

Before you buy

Installation and buying checks

Use these questions to verify the exact configuration. Linked facts are cited; unlisted details stay questions.

Mounting and support
Does the planned location suit the listed floor mounting, with the required support, clearance, and service access?
- Mounting: floorAmazon listing ↗
Clearance and handling
Do the listed physical details leave enough clearance for installation, adjustment, and service?
- Blade diameter: 12 inAmazon listing ↗
Electrical match
What voltage and connection requirements does the exact unit specify?
Airflow at the job
Is the listed airflow rated at an operating point that matches the job after placement, obstructions, and system resistance are considered?
- Airflow (high): 2,180 CFMAmazon listing ↗
Location requirements
Does the site require an environmental rating or guard? Neither is listed here.

Put 2,180 CFM in context

The Allegro 9539-12 Axial Blower has a listed airflow of 2,180 cubic feet per minute. The table compares this rated volume with example room volumes. It does not measure fresh-air exchange, air speed at your body, or room coverage.

Room	Size	Nominal room volumes / hour	Nominal pass interval
One-car garage	22 × 12 × 9 ft · 2,376 ft³	55×	1.1 min
Two-car garage	22 × 20 × 9 ft · 3,960 ft³	33×	1.8 min
Workshop	40 × 30 × 12 ft · 14,400 ft³	9.1×	6.6 min
Warehouse bay	100 × 50 × 16 ft · 80,000 ft³	1.6×	37 min

A circulation fan does not by itself replace indoor air. Exhaust airflow depends on a makeup-air path and system resistance. Use installed outdoor airflow for ventilation calculations.

Formula: airflow × 60 ÷ room volume. CDC explains the ventilation form of this equation; here the input is a catalog rating, so the result is a volume comparison.

Work it out for your own room →

Listing details

What we know about this listing

Listing data was imported on October 31, 2026. Each specification can have a different source-check date; the evidence below is the most precise source information available here.

Sources for 3 listed specifications