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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 Exhaust Fans
These fans have a motor that is UL listed for hazardous environments. Use them to draw stagnant and humid air out of a room or area.
Direct-drive fans have fewer moving parts than belt-drive fans for less maintenance. Add a collar (sold separately) to connect a wall-mount fan these fans to a louver.
Fans that cannot be sold to California do not meet energy efficiency requirements.
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Overall | Collars | ||||||||||||||||
| Blade Dia. | Airflow, cfm | Volume | Drive Type | Motor Speed, rpm | No. of Speeds | Power, hp | Ht. | Wd. | Dp. | Housing Material | Blade Material | Environmental Rating | Cannot Be Sold To | Each | Each | ||
230/460V AC, Three Phase—Hardwire | |||||||||||||||||
| 30" | 11,000 | 77 dBA @ 5 ft. | Direct | 1,125 | 1 | 1 1/2 | 36 1/8" | 36 1/8" | 29 1/4" | Steel | Aluminum | NEC Class I Divisions 1, 2 Group D; NEC Class II Divisions 1, 2 Groups F, G | CA | 0000000 | 000000000 | 0000000 | 0000000 |