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.
Battery-Powered Portable Fans
Cool down areas where you don't have an outlet—these fans are lightweight and battery-powered so you can tote them anywhere. The battery and charger are sold separately. You can also connect these fans to an electrical outlet with an extension cord (not included).
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 |
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 |
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 |
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 |