Schaefer · Drum fan · Giant airflow
Schaefer VKM36-O Versa-Kool Mobile Drum Fan
- 11,020 CFMon high
- 36-inchhead
- 1speed
- 1/2 HPmotor
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Specs cited from Manufacturer source ↗Photos: Amazon listing ↗ · refreshed Oct 31, 2026
Schaefer VKM36-O Versa-Kool Mobile Drum Fan is a drum fan.
What works
- 11,020 CFM on high from a 36-inch head
- 1/2 HP motor
- 2-year warranty
- 12-ft power cord
What doesn't
- Single speed only
- Heavy to move at 99 lb
- Needs clear floor space for placement
Who it's for
Good fit
- Portable circulation across larger open work areas
Look elsewhere if
- Floor space is too restricted for a drum-fan frame
A good fit for your job? Check the current price and delivery.
See price on AmazonSchaefer VKM36-O Versa-Kool Mobile Drum Fan is a drum fan.
Check the frame footprint and access route before buying. A high airflow rating alone does not establish how air reaches each occupied part of the room.
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
What mounting method and hardware does the exact unit require?
Clearance and handling
Do the listed physical details leave enough clearance for installation, adjustment, and service?
- Blade diameter: 36 inManufacturer source ↗
- Weight: 99 lbManufacturer source ↗
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): 11,020 CFMManufacturer source ↗
Location requirements
Does the site require an environmental rating or guard? Neither is listed here.
Put 11,020 CFM in context
The Schaefer VKM36-O Versa-Kool Mobile Drum Fan has a listed airflow of 11,020 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 | 278× | 13 s |
| Two-car garage | 22 × 20 × 9 ft · 3,960 ft³ | 167× | 22 s |
| Workshop | 40 × 30 × 12 ft · 14,400 ft³ | 46× | 1.3 min |
| Warehouse bay | 100 × 50 × 16 ft · 80,000 ft³ | 8.3× | 7.3 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.
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 8 listed specifications
- Airflow (high): Schaefer VKM36-O product page · checked Sep 23, 2026 · Specifications table — “Cfm (free Air) 11020; Speeds 1; Diameter (inches) 36; Cfm Calculation Standard ANSI/AMCA Standard 230-99”
- Blade diameter: Schaefer VKM36-O product page · checked Sep 23, 2026 · Specifications table — “Cfm (free Air) 11020; Speeds 1; Diameter (inches) 36; Cfm Calculation Standard ANSI/AMCA Standard 230-99”
- Speeds: Schaefer VKM36-O product page · checked Sep 23, 2026 · Specifications table — “Cfm (free Air) 11020; Speeds 1; Diameter (inches) 36; Cfm Calculation Standard ANSI/AMCA Standard 230-99”
- Motor: Schaefer VKM36-O product page · checked Sep 23, 2026 · Specifications table — “Power (hp) 1/2; Maximum Rpm 825; Product Net Weight (lbs) 99”
- Weight: Schaefer VKM36-O product page · checked Sep 23, 2026 · Specifications table — “Power (hp) 1/2; Maximum Rpm 825; Product Net Weight (lbs) 99”
- Max speed: Schaefer VKM36-O product page · checked Sep 23, 2026 · Specifications table — “Power (hp) 1/2; Maximum Rpm 825; Product Net Weight (lbs) 99”
- Cord length: Schaefer VKM36-O product page · checked Sep 23, 2026 · Specifications table — “Cord Length (feet) 12”
- Warranty: Schaefer VKM36-O product page · checked Sep 23, 2026 · Feature list — “Two year warranty”
Photos illustrate the listed model. Confirm the current variant, included hardware, and finish with the seller before purchase.
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