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.
Hazardous Location Spark-Resistant Blowers
These blowers have an explosion-proof motor that is UL listed for hazardous locations. They also have an aluminum housing for spark resistance. These blowers 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.
Note: Airflow depends on the resistance created by ductwork. This resistance, known as static pressure (SP), is measured in inches of water. It is the responsibility of users in California to follow local energy efficiency regulations. Operating these blowers at a high airflow may violate these regulations.
Overall | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Airflow @ Static Pressure | Volume | Motor Speed, rpm | Power, hp | Outlet Dia. | Inlet Dia. | Wheel Dia. | Ht. | Wd. | Dp. | Temp. Range, °F | Mount. Fasteners Included | Mount. Hole Dia. | Each | |
With Round Outlet and Inlet | ||||||||||||||
120/230V AC, Single Phase—Hardwire | ||||||||||||||
| 295 cfm @ 1 in. of H₂O 505 cfm @ 1/4 in. of H₂O | 55 dBA @ 15 ft. | 1,750 | 1/3 | 6" | 6" | 6 1/4" | 14 1/8" | 12 1/4" | 13 1/4" | 0° to 150° | No | 7/16" | 0000000 | 000000000 |
| 320 cfm @ 1 in. of H₂O 375 cfm @ 1/4 in. of H₂O | 60 dBA @ 15 ft. | 3,450 | 1/3 | 4" | 5" | 4 3/4" | 12 5/8" | 9 7/8" | 12 1/4" | 0° to 150° | No | 7/16" | 0000000 | 00000000 |
| 1,045 cfm @ 1/4 in. of H₂O | 55 dBA @ 15 ft. | 1,150 | 1/3 | 8" | 8" | 8 1/4" | 18 3/4" | 14 3/4" | 15 3/8" | 0° to 150° | No | 7/16" | 0000000 | 00000000 |
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 |
Belt-Drive Hazardous Location Duct Fans
These fans have an explosion-proof motor that is rated for hazardous environments. All are belt-drive fans that are quieter and have a longer life span than direct-drive fans because components can be replaced if worn or damaged. They install inline in ductwork for use as an exhaust, supply, or booster fan. Fans rated IP44 have a motor enclosure that's rated for protection in damp environments. UL and CSA standards apply to the motor.
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 | Mount. Fasteners Included | Mount. Hole Dia. | Each | |
120/230V AC, Single Phase—Hardwire | ||||||||||||||
| 12" | 1,400 cfm @ 3/8 in. of H₂O 1,600 cfm @ 1/8 in. of H₂O | 65 dBA @ 15 ft. | 3,025 | 1/2 | 14 1/16" | 23 7/16" | 12" | 175° | Steel | Aluminum | No | 7/16" | 0000000 | 000000000 |
| 15" | 2,800 cfm @ 3/8 in. of H₂O 3,200 cfm @ 1/8 in. of H₂O | 65 dBA @ 15 ft. | 2,275 | 3/4 | 17 1/16" | 26 15/16" | 12" | 175° | Steel | Aluminum | No | 7/16" | 0000000 | 00000000 |
| 18" | 2,500 cfm @ 3/8 in. of H₂O 3,400 cfm @ 1/8 in. of H₂O | 60 dBA @ 15 ft. | 1,600 | 1/2 | 20 1/16" | 30 3/16" | 12" | 175° | Steel | Aluminum | No | 7/16" | 0000000 | 00000000 |
230/460V AC, Three Phase—Hardwire | ||||||||||||||
| 18" | 4,400 cfm @ 3/8 in. of H₂O 4,800 cfm @ 1/8 in. of H₂O | 65 dBA @ 15 ft. | 2,150 | 1 | 20 1/16" | 30 3/16" | 12" | 175° | Steel | Aluminum | No | 7/16" | 0000000 | 00000000 |
| 36" | 13,300 cfm @ 3/8 in. of H₂O 15,200 cfm @ 1/8 in. of H₂O | 65 dBA @ 15 ft. | 1,000 | 2 | 39 1/4" | 49 1/4" | 16" | 175° | Steel | Aluminum | No | 7/16" | 0000000 | 00000000 |