AMCA Rated Exhaust Fans | McMaster-Carr

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.

Direct-Drive Upblast Roof-Mount Exhaust Fans

Direct-drive fans have fewer moving parts than belt-drive fans for less maintenance. These exhaust fans draw stagnant and humid air out through your roof and then expel it up and away from the roof surface. All fans have a disconnect switch to turn off the power for servicing.

Fans with a brushless motor have advanced electronic controls that allow them to precisely operate at wide range of speeds, making them more efficient, quieter, and longer lasting than fans with a standard motor.

Note: Airflow depends on the resistance created by ductwork. This resistance, known as static pressure (SP), is measured in inches of water.

Fans
						Overall									Mounting Bases
	Blade Dia.	Airflow @ Static Pressure	Volume	Motor Speed, rpm	Power, hp	Dia.	Ht.	Base Wd.	Wt., lbs.	Max. Ambient Temp., °F	Housing Material	Specifications Met		Each		Each
Open Dripproof Motor Enclosure
120V AC, Single Phase—Hardwire
1	9"	300 cfm @ 1/2 in. of H₂O 400 cfm @ 0 in. of H₂O	54 dBA @ 5 ft.	1,300	1/32	17 3/4"	14 1/2"	19"	40	120°	Aluminum	AMCA Certified, ETL Listed	0000000	0000000	0000000	0000000
1	11"	400 cfm @ 1/2 in. of H₂O 710 cfm @ 0 in. of H₂O	60 dBA @ 5 ft.	1,625	3/16	22"	18"	19"	43	300°	Aluminum	AMCA Certified, ETL Listed	0000000	000000	0000000	000000
1	11 3/4"	750 cfm @ 1/2 in. of H₂O 1,050 cfm @ 0 in. of H₂O	59 dBA @ 5 ft.	1,300	1/4	25 1/2"	25 1/4"	21"	67	300°	Aluminum	AMCA Certified, ETL Listed	0000000	000000	0000000	000000
1	12"	1,100 cfm @ 1/2 in. of H₂O 1,300 cfm @ 0 in. of H₂O	68 dBA @ 5 ft.	1,625	1/3	25 1/2"	25 1/4"	21"	50	300°	Aluminum	AMCA Certified, ETL Listed	0000000	000000	0000000	000000
1	13 3/4"	1,500 cfm @ 1/2 in. of H₂O 1,950 cfm @ 0 in. of H₂O	68 dBA @ 5 ft.	1,475	1/2	28 7/8"	27 1/4"	21"	78	300°	Aluminum	AMCA Certified, ETL Listed	0000000	000000	0000000	000000
1	16"	2,450 cfm @ 1/2 in. of H₂O 2,900 cfm @ 0 in. of H₂O	69 dBA @ 5 ft.	1,625	3/4	31 7/8"	30 1/2"	24 3/4"	80	300°	Aluminum	AMCA Certified, ETL Listed	0000000	00000000	0000000	000000
208-230V AC, Three Phase—Hardwire
1	18 3/4"	3,750 cfm @ 1/2 in. of H₂O 4,100 cfm @ 0 in. of H₂O	68 dB @ 5 ft.	1,150	2	37 3/8"	33 3/4"	28"	184	300°	Aluminum	AMCA Certified, ETL Listed	0000000	00000000	0000000	000000
1	20 3/4"	5,900 cfm @ 1/2 in. of H₂O 6,450 cfm @ 0 in. of H₂O	85 dBA @ 5 ft.	1,425	5	37 3/8"	33 1/4"	28"	221	300°	Aluminum	AMCA Certified, ETL Listed	0000000	00000000	0000000	000000
1	24"	7,000 cfm @ 1/2 in. of H₂O 7,750 cfm @ 0 in. of H₂O	72 dBA @ 5 ft.	900	3	41 7/8"	37 1/2"	33"	312	300°	Aluminum	AMCA Certified, ETL Listed	0000000	00000000	0000000	000000
1	30"	9,500 cfm @ 1/2 in. of H₂O 10,500 cfm @ 0 in. of H₂O	71 dBA @ 5 ft.	725	5	51 1/4"	44"	40"	497	300°	Aluminum	AMCA Certified, ETL Listed	0000000	00000000	0000000	000000
Totally Enclosed Motor Enclosure—Brushless Motor
120V AC, Single Phase—Hardwire
1	11 3/4"	1,050 cfm @ 1/2 in. of H₂O 1,300 cfm @ 0 in. of H₂O	70 dBA @ 5 ft.	1,575	1/3	25 1/2"	25 1/4"	21"	64	300°	Aluminum	AMCA Certified, ETL Listed	0000000	000000	0000000	000000
1	13 3/4"	1,550 cfm @ 1/2 in. of H₂O 2,000 cfm @ 0 in. of H₂O	69 dBA @ 5 ft.	1,500	1/2	28 7/8"	27 1/4"	21"	71	300°	Aluminum	AMCA Certified, ETL Listed	0000000	00000000	0000000	000000
1	15 3/4"	2,850 cfm @ 1/2 in. of H₂O 3,200 cfm @ 0 in. of H₂O	72 dBA @ 5 ft.	1,550	1	31 7/8"	30 1/2"	24 3/4"	87	300°	Aluminum	AMCA Certified, ETL Listed	0000000	00000000	0000000	000000

Direct-Drive Downdraft Roof-Mount Exhaust Fans

Direct-drive fans have fewer moving parts than belt-drive fans for less maintenance. More economical than upblast roof-mount exhaust fans, these draw stagnant and humid air out through your roof and then direct it back toward the roof. All fans have a disconnect switch to turn off the power for servicing.

Fans with a brushless motor are more efficient than fans with a standard motor. They operate at a wide range of speeds for precise speed control and greater energy savings. They’re also quieter and have a longer lifespan because of their advanced electronic controls.

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.

Fans
						Overall									Mounting Bases
	Blade Dia.	Airflow @ Static Pressure	Volume	Motor Speed, rpm	Power, hp	Dia.	Ht.	Base Wd.	Wt., lbs.	Max. Ambient Temp., °F	Housing Material	Specifications Met		Each		Each
Totally Enclosed Motor Enclosure
120V AC, Single Phase—Hardwire
1	10"	60 cfm @ 1/2 in. of H₂O 500 cfm @ 0 in. of H₂O	Not Rated	1,500	1/30	18 5/16"	11 1/4"	19"	21	Not Rated	Aluminum	AMCA Certified, ETL Listed	0000000	0000000	0000000	0000000
1	12"	430 cfm @ 1/2 in. of H₂O 830 cfm @ 0 in. of H₂O	Not Rated	1,500	1/10	20 5/16"	11 3/4"	19"	30	Not Rated	Aluminum	AMCA Certified, ETL Listed	0000000	000000	0000000	000000
1	14"	520 cfm @ 1/2 in. of H₂O 1,100 cfm @ 0 in. of H₂O	Not Rated	1,100	1/6	27 5/16"	14 5/8"	21"	39	Not Rated	Aluminum	AMCA Certified, ETL Listed	0000000	000000	0000000	000000
1	18"	1,200 cfm @ 1/2 in. of H₂O 2,400 cfm @ 0 in. of H₂O	Not Rated	1,100	1/3	33 9/16"	16 3/8"	26"	60	Not Rated	Aluminum	AMCA Certified, ETL Listed	0000000	000000	0000000	000000
Totally Enclosed Motor Enclosure—Brushless Motor
120V AC, Single Phase—Hardwire
2	12"	1,000 cfm @ 1/2 in. of H₂O 1,300 cfm @ 0 in. of H₂O	66 dBA @ 5 ft.	1,575	1/3	26 1/4"	19 1/8"	21"	54	120°	Aluminum	AMCA Certified, ETL Listed	0000000	000000	0000000	000000
2	14"	1,900 cfm @ 1/2 in. of H₂O 2,300 cfm @ 0 in. of H₂O	68 dBA @ 5 ft.	1,525	1/2	29 3/4"	21 3/4"	21"	61	120°	Aluminum	AMCA Certified, ETL Listed	0000000	00000000	0000000	000000
2	16"	2,850 cfm @ 1/2 in. of H₂O 3,300 cfm @ 0 in. of H₂O	71 dBA @ 5 ft.	1,525	1	33 1/4"	23 3/8"	24"	74	120°	Aluminum	AMCA Certified, ETL Listed	0000000	00000000	0000000	000000
Open Dripproof Motor Enclosure
120V AC, Single Phase—Hardwire
2	9"	100 cfm @ 1/2 in. of H₂O 400 cfm @ 0 in. of H₂O	50 dBA @ 5 ft.	1,250	1/32	20 3/4"	14 1/2"	19"	40	120°	Aluminum	AMCA Certified, ETL Listed	0000000	000000	0000000	000000
2	11"	600 cfm @ 1/2 in. of H₂O 800 cfm @ 0 in. of H₂O	57 dBA @ 5 ft.	1,625	3/16	23 3/4"	16 1/4"	19"	37	Not Rated	Aluminum	AMCA Certified, ETL Listed	0000000	000000	0000000	000000
2	12"	950 cfm @ 1/2 in. of H₂O 1,250 cfm @ 0 in. of H₂O	62 dBA @ 5 ft.	1,625	1/4	26 1/4"	19 1/8"	21"	53	Not Rated	Aluminum	AMCA Certified, ETL Listed	0000000	000000	0000000	000000
2	14"	1,800 cfm @ 1/2 in. of H₂O 2,100 cfm @ 0 in. of H₂O	66 dBA @ 5 ft.	1,625	1/2	29 3/4"	21 3/4"	21"	56	Not Rated	Aluminum	AMCA Certified, ETL Listed	0000000	000000	0000000	000000
2	16"	2,600 cfm @ 1/2 in. of H₂O 3,100 cfm @ 0 in. of H₂O	70 dBA @ 5 ft.	1,450	3/4	33 1/4"	23 3/8"	24"	77	120°	Aluminum	AMCA Certified, ETL Listed	0000000	000000	0000000	000000
208/230V AC, Three Phase—Hardwire
3	19"	4,500 cfm @ 1/2 in. of H₂O 5,000 cfm @ 0 in. of H₂O	75 dBA @ 5 ft.	1,300	2	38 15/16"	32 3/4"	28"	189	120°	Aluminum	AMCA Certified, ETL Listed	0000000	00000000	0000000	000000
3	21"	6,200 cfm @ 1/2 in. of H₂O 6,700 cfm @ 0 in. of H₂O	82 dBA @ 5 ft.	1,400	5	38 15/16"	32 1/4"	28"	201	120°	Aluminum	AMCA Certified, ETL Listed	0000000	00000000	0000000	000000
3	24"	8,100 cfm @ 1/2 in. of H₂O 9,000 cfm @ 0 in. of H₂O	73 dBA @ 5 ft.	925	3	43 7/16"	37 1/4"	33"	288	120°	Aluminum	AMCA Certified, ETL Listed	0000000	00000000	0000000	000000
3	30"	10,400 cfm @ 1/2 in. of H₂O 11,500 cfm @ 0 in. of H₂O	69 dBA @ 5 ft.	700	5	52 13/16"	44"	40"	467	120°	Aluminum	AMCA Certified, ETL Listed	0000000	00000000	0000000	000000
3	36"	11,000 cfm @ 1/2 in. of H₂O 13,500 cfm @ 0 in. of H₂O	64 dBA @ 5 ft.	450	5	63 5/16"	49 1/2"	44"	532	120°	Aluminum	AMCA Certified, ETL Listed	0000000	00000000	0000000	000000