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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement)  |
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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.
About Exhaust Fans
More
Direct-Drive Wall-Mount Exhaust Fans with Louvers
These fans come complete with a movable-blade louver. The louvers are gravity operated so they open only when air flows through them, which prevents backdrafts. Direct-drive fans have fewer moving parts than belt-drive fans for less maintenance. Use these fans to draw stagnant and humid air out of a room or area. All have an open dripproof motor enclosure for relatively clean, dry, indoor locations. They also have a wire mesh inlet guard to protect the fan from debris.
For technical drawings and 3-D models, click on a part number.
For Opening | Overall | |||||||||||||||
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| Blade Dia. | Airflow, cfm | Volume | Motor Speed, rpm | No. of Speeds | Power, hp | Ht. | Wd. | Ht. | Wd. | Dp. | Housing Material | Frame Material | Blade Material | Specifications Met | Each | |
120V AC, Single Phase—Hardwire | ||||||||||||||||
| 18" | 3,800 | 65 dBA @ 5 ft. | 1,300 | 1 | 3/4 | 25 1/4" | 25 1/4" | 27 1/2" | 27 1/2" | 26 1/4" | Steel | Galvanized Steel | Aluminum | C-UL Listed, UL Listed | 00000000 | 000000000 |
| For Airflow, cfm | Motor Speed, rpm | Power, hp | Each | |
120V AC, Single Phase | ||||
|---|---|---|---|---|
| 3,800 | 1,300 | 3/4 | 00000000 | 0000000 |
Collars for Wall-Mount Exhaust Fans
Connect your wall-mount exhaust fan to a louver. One side of the collar fits around your exhaust fan and the other includes a flange for mounting a louver. Overall height and width include the mounting flange.
Note: To be compatible with the fan, the collar must be larger than the overall fan dimensions. To be compatible with the louver, the collar's For Louvers That Fit Opening Height and Width must match the louver's For Opening Width and Height.
For technical drawings and 3-D models, click on a part number.