About Sound Levels
Measured in decibels (dB), volume ratings indicate how much noise equipment makes. Some common volume levels include a whisper @ 20 dB, a refrigerator @ 40 dB, a conversation @ 60 dB, and a light machine shop @ 90 dB. OSHA recommends hearing protection for exposure to 80 dB and greater.
Window-Mount Office Fans

Draw fresh air in or push stale air out of your windows. Reverse airflow with the flip of a switch. Side panels expand to fit the width of your window.
Overall | Blade | |||||||||||||
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Blade Dia. | Airflow, cfm | No. of Speeds | Current, A | Ht. | Wd. | Dp. | Cord Lg., ft. | Housing Material | Material | Rotation | Guard Material | Specifications Met | Each | |
120V AC, Single Phase—Three Prong Plug | ||||||||||||||
Non-Oscillating | ||||||||||||||
20" | 3,500 | 3 | 1.4 | 26" | 27"-38" | 10" | 7 | Plastic | Steel | Reversible | Steel | ETL Listed | 0000000 | 0000000 |
High-Output Spark-Resistant Blowers

Powerful and durable, these blowers are able to blow air through larger systems that have more airflow resistance than standard spark-resistant blowers can handle. They have an aluminum housing for spark resistance. They install in ductwork similar to duct fans, but are for use where high static pressures are present. Use them for equipment cooling, material conveying, drying, ventilating, and exhausting. All blowers have a totally enclosed motor enclosure, which can be used in dirty, dusty, and damp environments.
Note: Airflow depends on the resistance created by ductwork. This resistance, known as static pressure (SP), is measured in inches of water.
For technical drawings and 3-D models, click on a part number.
Overall | |||||||||||||||
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Airflow @ Static Pressure | Volume | Motor Speed, rpm | Power, hp | Outlet Dia. | Inlet Dia. | Wheel Dia. | Ht. | Wd. | Dp. | Wt., lbs. | Temp. Range, °F | Mount. Fasteners Included | Mount. Hole Dia. | Each | |
With Round Outlet and Inlet—Totally Enclosed Motor Enclosure | |||||||||||||||
230/460V AC, Three Phase—Hardwire | |||||||||||||||
1,600 cfm @ 5 in. of H₂O 1,890 cfm @ 3 in. of H₂O | 76 dBA @ 15 ft. | 3,450 | 5 | 8" | 8" | 14" | 26" | 22 1/16" | 22 3/16" | 213 | -10° to 150° | No | 7/16" | 0000000 | 000000000 |