21" Fans | McMaster-Carr

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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.

About Exhaust Fans

About Calculating the Airflow Required for Air Cleaning

Jet-Stream Floor Fans

Often used to cool warehouse aisles and production lines, these fans generate a stream of air that travels farther than air from conventional fans.They have a totally enclosed motor enclosure, which can be used in dirty, dusty, and damp environments.

Direct-drive fans have fewer moving parts than belt-drive fans for less maintenance.

Without Wheels

Without Wheels

							Overall
Blade Dia.	Airflow, cfm	Volume	Motor Speed, rpm	No. of Speeds	Power, hp	Current, A	Ht.	Wd.	Dp.	Fan Head Movement	Housing Material	Blade Material	Guard Material		Each
120/230V AC, Single Phase—Hardwire
18"	4,000	74 dB @ 15 ft.	1,750	1	1/2	8.0/4.4	21"	18"	20"	Non-Oscillating	Steel	Aluminum	Steel	000000	000000000
230/460V AC, Three Phase—Hardwire
18"	4,000	74 dB @ 15 ft.	1,750	1	1/2	1.7/0.8	21"	18"	20"	Non-Oscillating	Steel	Aluminum	Steel	000000	00000000

Multi-Mount Office Fans

You can mount these fans on beams and walls. The fan head tilts to direct air where it's needed.

Fans
				Overall											Replacement Motors
Blade Dia.	Airflow, cfm	No. of Speeds	Current, A	Ht.	Wd.	Dp.	Cord Lg., ft.	Blade Material	Guard Material	Mounting Fasteners Included	Mounting Hole Dia.	Specifications Met		Each		Each
120V AC, Single Phase—Three Prong Plug
Non-Oscillating, Tilting
18"	3,100	3	1.5	21"	22"	16"	9	Steel	Steel	No	3/4"	ETL Listed	0000000	0000000	0000000	000000

Wall-Mount Office Fans

Keep cool with these personal-size wall-mount fans. The fan head tilts to direct air where it's needed.

For technical drawings and 3-D models, click on a part number.

				Overall
Blade Dia.	Airflow, cfm	No. of Speeds	Current, A	Ht.	Wd.	Dp.	Cord Lg., ft.	Blade Material	Guard Material	Mounting Fasteners Included	Specifications Met		Each
120V AC, Single Phase—Three Prong Plug
Oscillating, Tilting
12"	900	3	0.4	21"	16"	15"	6	Plastic	Steel	Yes	ETL Listed	0000000	000000

Light Duty Direct-Drive Wall-Mount Exhaust Fans with Louvers

These light duty fans are designed for use without duct. They come complete with a movable-blade louver. The louvers are gravity operated so they open only when air flows through them, which prevents backdrafts. Direct-drive fans have fewer moving parts than belt-drive fans for less maintenance. Use these fans to draw stagnant and humid air out of a room or area. All have a totally enclosed motor enclosure, which can be used in dirty, dusty, and damp environments.

For technical drawings and 3-D models, click on a part number.

					For Opening		Overall
Blade Dia.	Airflow, cfm	Motor Speed, rpm	No. of Speeds	Power, hp	Ht.	Wd.	Ht.	Wd.	Dp.	Max. Ambient Temperature	Control Type	Frame Material	Blade Material	Mount. Fasteners Included	Mount. Hole Dia.	Specifications Met		Each
120V AC, Single Phase—Hardwire
18"	2,300	1,660	3	1/8	18 1/2"	18 1/2"	21"	21"	13 1/4"	100° F	Pull Switch	Steel	Aluminum	No	1/4"	UL Recognized Component	00000000	0000000

Corrosion-Resistant Portable Blowers

A plastic housing offers good corrosion resistance. These blowers are powerful enough for use with flexible duct, yet light enough to carry from job to job. Use them for equipment cooling, material conveying, drying, ventilating, and exhausting. Blowers have a totally enclosed motor enclosure, which can be used in dirty, dusty, and damp environments. They are stackable for increased airflow and storage.

						Overall
Airflow, cfm	Airflow @ Duct Lg.	Volume	Motor Speed, rpm	Power, hp	For Duct Dia.	Ht.	Wd.	Dp.	Plug Type	Cord Lg., ft.	Temp. Range, °F	Housing Material	Blade Material		Each
120V AC, Single Phase—Plug
2,000	1,600 cfm @ 50 ft.	80 dB @ 15 ft.	3,425	1	12"	21"	14"	17"	Three Prong	20	-20° to 150°	Polyethylene Plastic	Polypropylene Plastic	00000000	0000000

Oil- and Coolant-Collecting Air Cleaners

Often used in machine shops, these cleaners remove oil and coolant mist from the air. Air passes through a spinning drum.

Cleaners that cannot be sold to California are restricted due to energy efficiency requirements.

For technical drawings and 3-D models, click on a part number.

Cleaners
						Overall									Replacement Filters
Airflow, cfm	Volume	Power, hp	Voltage	Current	For Inlet Duct Dia.	Ht.	Wd.	Dp.	Mounting Fasteners Included	Mounting Hole Dia.	Includes	Cannot Be Sold To		Each		Each
380	58 dB @ 15 ft.	1	208V AC 240V AC 460V AC	2.1A 4.2A 4.6A	4"	21"	17"	22"	No	9/16"	Disposable Filter (Captures 98% of mist particles down to 1 micron)	CA	000000	000000000	0000000	000000