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.
High-Output Direct-Drive Duct Fans
Produce three times the airflow as standard direct-drive duct fans. All of these direct-drive fans have fewer moving parts than belt-drive fans for less maintenance. Also known as axial duct fans, they install inline in ductwork for use as an exhaust, supply, or booster fan. All have a TEFC (totally enclosed fan cooled) 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.
Overall | Mounting | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For Duct Dia. | Airflow @ Static Pressure | Volume | Motor Speed, rpm | Power, hp | Dia. | Ht. | Dp. | Bolt Circle Dia. | Max. Temp., °F | Housing Material | Blade Material | Fasteners Included | For Screw Size  | Hole Dia. | No. of Holes | Each | |
120/230V AC, Single Phase—Hardwire | |||||||||||||||||
| 12" | 1,900 cfm @ 3/8 in. of H₂O 2,000 cfm @ 1/8 in. of H₂O | 70 dBA @ 15 ft. | 3,450 | 1/2 | 14 1/16" | 14 1/16" | 20" | 13 1/8" | 100° | Steel | Aluminum | No | 3/8" | 7/16" | 8 | 0000000 | 000000000 |
| 15" | 2,100 cfm @ 3/8 in. of H₂O 2,700 cfm @ 1/8 in. of H₂O | 60 dBA @ 15 ft. | 1,750 | 1/2 | 17 1/16" | 17 1/16" | 20" | 16 1/8" | 100° | Steel | Aluminum | No | 3/8" | 7/16" | 8 | 0000000 | 00000000 |
| 18" | 3,900 cfm @ 3/8 in. of H₂O 4,500 cfm @ 1/8 in. of H₂O | 65 dBA @ 15 ft. | 1,750 | 3/4 | 20 1/16" | 20 1/16" | 20" | 19 1/8" | 100° | Steel | Aluminum | No | 3/8" | 7/16" | 8 | 0000000 | 00000000 |
| 24" | 4,900 cfm @ 3/8 in. of H₂O 5,800 cfm @ 1/8 in. of H₂O | 65 dBA @ 15 ft. | 1,750 | 3/4 | 26 11/16" | 26 11/16" | 21" | 25 13/16" | 100° | Steel | Aluminum | No | 3/8" | 7/16" | 8 | 0000000 | 00000000 |
230/460V AC, Three Phase—Hardwire | |||||||||||||||||
| 12" | 1,900 cfm @ 3/8 in. of H₂O 2,000 cfm @ 1/8 in. of H₂O | 70 dBA @ 15 ft. | 3,450 | 1/2 | 14 1/16" | 14 1/16" | 20" | 13 1/8" | 100° | Steel | Aluminum | No | 3/8" | 7/16" | 8 | 0000000 | 00000000 |
| 15" | 2,100 cfm @ 3/8 in. of H₂O 2,700 cfm @ 1/8 in. of H₂O | 60 dBA @ 15 ft. | 1,750 | 1/2 | 17 1/16" | 17 1/16" | 20" | 16 1/8" | 100° | Steel | Aluminum | No | 3/8" | 7/16" | 8 | 0000000 | 00000000 |
| 18" | 3,900 cfm @ 3/8 in. of H₂O 4,500 cfm @ 1/8 in. of H₂O | 60 dBA @ 15 ft. | 1,750 | 3/4 | 20 1/16" | 20 1/16" | 20" | 19 1/8" | 100° | Steel | Aluminum | No | 3/8" | 7/16" | 8 | 0000000 | 00000000 |
| 24" | 4,900 cfm @ 3/8 in. of H₂O 5,800 cfm @ 1/8 in. of H₂O | 65 dBA @ 15 ft. | 1,750 | 3/4 | 26 11/16" | 26 11/16" | 21" | 25 13/16" | 100° | Steel | Aluminum | No | 3/8" | 7/16" | 8 | 0000000 | 00000000 |
Direct-Drive Duct Fans
Direct-drive fans have fewer moving parts than belt-drive fans for less maintenance. Also known as axial duct fans, these install inline in ductwork for use as an exhaust, supply, or booster fan. All fans 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.
Overall | Mounting | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For Duct Dia. | Airflow @ Static Pressure | Motor Speed, rpm | Power, hp | Dia. | Ht. | Dp. | Max. Temp., °F | Housing Material | Blade Material | Specifications Met | Hardware Included | Hole Diameter | Each | |
120V AC, Single Phase—Hardwire | ||||||||||||||
| 4" | 95 cfm @ 3/8 in. of H₂O 135 cfm @ 1/8 in. of H₂O | 3,050 | 1/40 | 9 1/2" | 9 1/2" | 9 5/8" | 140° | ABS/Polycarbonate Plastic | Nylon Plastic | C-UL Listed, UL Listed | Yes | 1/4" | 00000000 | 0000000 |
| 4" | 143 cfm @ 3/8 in. of H₂O 168 cfm @ 1/8 in. of H₂O | 2,450 | 1/9 | 10" | 10 1/2" | 10 9/16" | 140° | ABS/Polycarbonate Plastic | Nylon Plastic | C-UL Listed, UL Listed | Yes | 1/4" | 000000000 | 000000 |
| 5" | 105 cfm @ 3/8 in. of H₂O 150 cfm @ 1/8 in. of H₂O | 3,050 | 1/40 | 9 1/2" | 9 1/2" | 7 7/8" | 140° | ABS/Polycarbonate Plastic | Nylon Plastic | C-UL Listed, UL Listed | Yes | 1/4" | 00000000 | 000000 |
| 6" | 201 cfm @ 3/8 in. of H₂O 255 cfm @ 1/8 in. of H₂O | 2,450 | 1/12 | 11 5/8" | 12 1/8" | 9 7/32" | 140° | ABS/Polycarbonate Plastic | Nylon Plastic | C-UL Listed, UL Listed | Yes | 1/4" | 000000000 | 000000 |
| 6" | 250 cfm @ 3/8 in. of H₂O 300 cfm @ 1/8 in. of H₂O | 2,450 | 1/10 | 11 3/4" | 11 3/4" | 9 5/8" | 140° | ABS/Polycarbonate Plastic | Nylon Plastic | C-UL Listed, UL Listed | Yes | 1/4" | 00000000 | 000000 |
| 6" | 250 cfm @ 3/8 in. of H₂O 308 cfm @ 1/8 in. of H₂O | 2,150 | 1/6 | 11 5/8" | 12 1/8" | 9 7/32" | 140° | ABS/Polycarbonate Plastic | Nylon Plastic | C-UL Listed, UL Listed | Yes | 1/4" | 000000000 | 000000 |
Direct-Drive Corrosion-Resistant Duct Fans
A galvanized steel housing offers good corrosion resistance. All of these direct-drive fans have fewer moving parts than belt-drive fans for less maintenance. Also known as axial duct fans, they install inline in ductwork for use as an exhaust, supply, or booster fan. The fans 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.
Overall | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For Duct Dia. | Airflow @ Static Pressure | Motor Speed, rpm | Power, hp | Dia. | Ht. | Dp. | Max. Temp., °F | Housing Material | Blade Material | Specifications Met | Each | |
120V AC, Single Phase—Hardwire | ||||||||||||
| 4" | 90 cfm @ 3/8 in. of H₂O 115 cfm @ 1/8 in. of H₂O | 3,000 | 1/40 | 8 3/4" | 10 3/4" | 6 1/2" | 140° | Galvanized Steel | Polypropylene Plastic | C-UL Listed, UL Listed | 0000000 | 0000000 |
| 5" | 105 cfm @ 3/8 in. of H₂O 135 cfm @ 1/8 in. of H₂O | 3,000 | 1/40 | 8 3/4" | 10 3/4" | 5 1/2" | 140° | Galvanized Steel | Polypropylene Plastic | C-UL Listed, UL Listed | 0000000 | 000000 |
| 6" | 240 cfm @ 3/8 in. of H₂O 280 cfm @ 1/8 in. of H₂O | 2,700 | 1/10 | 11 3/8" | 13 3/8" | 6" | 140° | Galvanized Steel | Polypropylene Plastic | C-UL Listed, UL Listed | 0000000 | 000000 |
| 8" | 360 cfm @ 3/8 in. of H₂O 425 cfm @ 1/8 in. of H₂O | 2,550 | 1/6 | 13 3/8" | 15 3/8" | 6" | 140° | Galvanized Steel | Polypropylene Plastic | C-UL Listed, UL Listed | 0000000 | 000000 |
| 8" | 435 cfm @ 3/8 in. of H₂O 480 cfm @ 1/8 in. of H₂O | 2,950 | 1/5 | 13 3/8" | 15 3/8" | 6" | 140° | Galvanized Steel | Polypropylene Plastic | C-UL Listed, UL Listed | 0000000 | 000000 |
| 10" | 540 cfm @ 3/8 in. of H₂O 570 cfm @ 1/8 in. of H₂O | 3,100 | 1/4 | 13 3/8" | 15 3/8" | 5 7/8" | 140° | Galvanized Steel | Polypropylene Plastic | C-UL Listed, UL Listed | 0000000 | 000000 |
| 12" | 620 cfm @ 3/8 in. of H₂O 700 cfm @ 1/8 in. of H₂O | 2,600 | 1/4 | 16" | 18" | 8 1/4" | 140° | Galvanized Steel | Polypropylene Plastic | C-UL Listed, UL Listed | 0000000 | 000000 |
120V AC, Single Phase—Plug | ||||||||||||
| 4" | 90 cfm @ 3/8 in. of H₂O 115 cfm @ 1/8 in. of H₂O | 3,000 | 1/40 | 8 3/4" | 10 3/4" | 6 1/2" | 140° | Galvanized Steel | Polypropylene Plastic | C-UL Listed, UL Listed | 0000000 | 000000 |
| 5" | 105 cfm @ 3/8 in. of H₂O 135 cfm @ 1/8 in. of H₂O | 3,000 | 1/40 | 8 3/4" | 10 3/4" | 5 1/2" | 140° | Galvanized Steel | Polypropylene Plastic | C-UL Listed, UL Listed | 0000000 | 000000 |
| 8" | 360 cfm @ 3/8 in. of H₂O 425 cfm @ 1/8 in. of H₂O | 2,550 | 1/6 | 13 3/8" | 15 3/8" | 6" | 140° | Galvanized Steel | Polypropylene Plastic | C-UL Listed, UL Listed | 0000000 | 000000 |
| 8" | 435 cfm @ 3/8 in. of H₂O 480 cfm @ 1/8 in. of H₂O | 2,950 | 1/5 | 13 3/8" | 15 3/8" | 6" | 140° | Galvanized Steel | Polypropylene Plastic | C-UL Listed, UL Listed | 0000000 | 000000 |
| 10" | 540 cfm @ 3/8 in. of H₂O 570 cfm @ 1/8 in. of H₂O | 3,100 | 1/4 | 13 3/8" | 15 3/8" | 5 7/8" | 140° | Galvanized Steel | Polypropylene Plastic | C-UL Listed, UL Listed | 0000000 | 000000 |
DC Heater and Air Conditioner Duct Booster Fans
Often used in vehicles, these fans operate on DC power. Insert them directly into your ductwork. They give small heaters and air conditioners a boost to circulate air through ductwork. All 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.
Overall | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For Duct Dia. | Airflow @ Static Pressure | Volume | Ht. | Wd. | Dp. | Max. Temp., °F | Housing Material | Blade Material | Mounting Fasteners Included | Mounting Hole Dia. | Each | |
12V DC—Hardwire | ||||||||||||
| 3" | 130 cfm @ 0 in. of H₂O | 65 dBA @ 15 ft. | 3 3/16" | 5" | 5 1/4" | 200° | Polypropylene Plastic | Polypropylene Plastic | No | 3/16" | 00000000 | 000000 |
| 4" | 230 cfm @ 0 in. of H₂O | 69 dBA @ 15 ft. | 4 3/16" | 6" | 5 1/4" | 200° | Polypropylene Plastic | Polypropylene Plastic | No | 3/16" | 00000000 | 00000 |
Direct-Drive Hazardous Location Duct Fans
These fans have an explosion-proof motor that is UL listed for Class I, Divisions 1 and 2, Group D; and Class II, Divisions 1 and 2, Groups F and G hazardous environments. All are direct-drive fans that have fewer moving parts than belt-drive fans for less maintenance. Also known as axial duct fans, they install inline in ductwork for use as an exhaust, supply, or booster fan. The fans have a TEFC (totally enclosed fan cooled) 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.
Overall | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For Duct Dia. | Airflow @ Static Pressure | Volume | Motor Speed, rpm | Power, hp | Dia. | Ht. | Dp. | Max.Temp., °F | Housing Material | Blade Material | Mounting Fasteners Included | Mounting Hole Dia. | Each | |
120/230V AC, Single Phase—Hardwire | ||||||||||||||
| 12" | 1,900 cfm @ 3/8 in. of H₂O 2,000 cfm @ 1/8 in. of H₂O | 70 dBA @ 15 ft. | 3,450 | 1/2 | 14 1/16" | 14 1/16" | 20" | 100° | Steel | Aluminum | No | 7/16" | 0000000 | 000000000 |
| 15" | 2,100 cfm @ 3/8 in. of H₂O 2,700 cfm @ 1/8 in. of H₂O | 60 dBA @ 15 ft. | 1,750 | 1/2 | 17 1/16" | 17 1/16" | 20" | 100° | Steel | Aluminum | No | 7/16" | 0000000 | 00000000 |
| 18" | 3,900 cfm @ 3/8 in. of H₂O 4,500 cfm @ 1/8 in. of H₂O | 65 dBA @ 15 ft. | 1,750 | 3/4 | 20 1/16" | 20 1/16" | 20" | 100° | Steel | Aluminum | No | 7/16" | 0000000 | 00000000 |
| 24" | 4,900 cfm @ 3/8 in. of H₂O 5,800 cfm @ 1/8 in. of H₂O | 65 dBA @ 15 ft. | 1,750 | 3/4 | 26 11/16" | 26 11/16" | 21" | 100° | Steel | Aluminum | No | 7/16" | 0000000 | 00000000 |
230/460V AC, Three Phase—Hardwire | ||||||||||||||
| 12" | 1,900 cfm @ 3/8 in. of H₂O 2,000 cfm @ 1/8 in. of H₂O | 70 dBA @ 15 ft. | 3,450 | 1/2 | 14 1/16" | 14 1/16" | 20" | 100° | Steel | Aluminum | No | 7/16" | 0000000 | 00000000 |
| 15" | 2,100 cfm @ 3/8 in. of H₂O 2,700 cfm @ 1/8 in. of H₂O | 60 dBA @ 15 ft. | 1,750 | 1/2 | 17 1/16" | 17 1/16" | 20" | 100° | Steel | Aluminum | No | 7/16" | 0000000 | 00000000 |
| 18" | 3,900 cfm @ 3/8 in. of H₂O 4,500 cfm @ 1/8 in. of H₂O | 60 dBA @ 15 ft. | 1,750 | 3/4 | 20 1/16" | 20 1/16" | 20" | 100° | Steel | Aluminum | No | 7/16" | 0000000 | 00000000 |
| 24" | 4,900 cfm @ 3/8 in. of H₂O 5,800 cfm @ 1/8 in. of H₂O | 65 dBA @ 15 ft. | 1,750 | 3/4 | 26 11/16" | 26 11/16" | 21" | 100° | Steel | Aluminum | No | 7/16" | 0000000 | 00000000 |