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.
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 |
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 |