Schaefer · Drum fan · Giant airflow

Schaefer VKM42-2-B-O Versa-Kool Mobile Fan

Schaefer VKM42-2-B-O Versa-Kool Mobile Fan
  • Schaefer VKM42-2-B-O Versa-Kool Mobile Fan, view 2
  • Schaefer VKM42-2-B-O Versa-Kool Mobile Fan, view 3
  • 16,600 CFMon high
  • 42-inchhead
  • 2speeds
  • 1 HPmotor
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Is 16,600 CFM enough for my room?Compare this fan

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

Schaefer VKM42-2-B-O Versa-Kool Mobile Fan is a drum fan with 42-inch listed fan diameter, 2 speed settings.

What works

  • 16,600 CFM on high from a 42-inch head
  • 2 speeds, down to 10,900 CFM on low
  • 1 HP motor on standard 115 V power
  • 2-year warranty
  • 12-ft power cord

What doesn't

  • Heavy to move at 140 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 Amazon

Schaefer VKM42-2-B-O Versa-Kool Mobile Fan is a drum fan with 42-inch listed fan diameter, 2 speed settings.

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.

  1. Mounting and support

    What mounting method and hardware does the exact unit require?

  2. Clearance and handling

    Do the listed physical details leave enough clearance for installation, adjustment, and service?

  3. Electrical match

    Does the documented electrical information match the planned supply? Confirm the installed unit’s nameplate and installation instructions before connecting it.

  4. 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?

  5. Location requirements

    Does the site require an environmental rating or guard? Neither is listed here.

Put 16,600 CFM in context

The Schaefer VKM42-2-B-O Versa-Kool Mobile Fan has a listed airflow of 16,600 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.

RoomSizeNominal room volumes / hourNominal pass interval
One-car garage22 × 12 × 9 ft · 2,376 ft³419×9 s
Two-car garage22 × 20 × 9 ft · 3,960 ft³252×14 s
Workshop40 × 30 × 12 ft · 14,400 ft³69×52 s
Warehouse bay100 × 50 × 16 ft · 80,000 ft³12×4.8 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 11 listed specifications
  • Blade diameter: Schaefer VKM42-2-B-O product page · checked Sep 23, 2026 · Specifications table — “Cfm (high) 16600; Cfm (low) 10900; Speeds 2; Diameter (inches) 42; Cfm Calculation Standard ANSI/AMCA Standard 230-99”
  • Blade diameter: Amazon product listing · checked Sep 15, 2026
  • Speeds: Schaefer VKM42-2-B-O product page · checked Sep 23, 2026 · Specifications table — “Cfm (high) 16600; Cfm (low) 10900; Speeds 2; Diameter (inches) 42; Cfm Calculation Standard ANSI/AMCA Standard 230-99”
  • Speeds: Amazon product listing · checked Sep 15, 2026
  • Airflow (high): Schaefer VKM42-2-B-O product page · checked Sep 23, 2026 · Specifications table — “Cfm (high) 16600; Cfm (low) 10900; Speeds 2; Diameter (inches) 42; Cfm Calculation Standard ANSI/AMCA Standard 230-99”
  • Airflow (low): Schaefer VKM42-2-B-O product page · checked Sep 23, 2026 · Specifications table — “Cfm (high) 16600; Cfm (low) 10900; Speeds 2; Diameter (inches) 42; Cfm Calculation Standard ANSI/AMCA Standard 230-99”
  • Motor: Schaefer VKM42-2-B-O product page · checked Sep 23, 2026 · Specifications table — “Power (hp) 1; Maximum Rpm 1725; Product Net Weight (lbs) 140; Voltage 115; Nameplate Amps 12.3”
  • Weight: Schaefer VKM42-2-B-O product page · checked Sep 23, 2026 · Specifications table — “Power (hp) 1; Maximum Rpm 1725; Product Net Weight (lbs) 140; Voltage 115; Nameplate Amps 12.3”
  • Max speed: Schaefer VKM42-2-B-O product page · checked Sep 23, 2026 · Specifications table — “Power (hp) 1; Maximum Rpm 1725; Product Net Weight (lbs) 140; Voltage 115; Nameplate Amps 12.3”
  • Voltage: Schaefer VKM42-2-B-O product page · checked Sep 23, 2026 · Specifications table — “Power (hp) 1; Maximum Rpm 1725; Product Net Weight (lbs) 140; Voltage 115; Nameplate Amps 12.3”
  • Current: Schaefer VKM42-2-B-O product page · checked Sep 23, 2026 · Specifications table — “Power (hp) 1; Maximum Rpm 1725; Product Net Weight (lbs) 140; Voltage 115; Nameplate Amps 12.3”
  • Cord length: Schaefer VKM42-2-B-O product page · checked Sep 23, 2026 · Specifications table — “Cord Length (feet) 12”
  • Warranty: Schaefer VKM42-2-B-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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