Description
- Grey plastic weather hood.
- Galvanized metal hood.
- MC type and wet locations controls.
NOTE: RPM Min (minimum) is determined when louvres are opened one inch.
NOTE: wind has a significant effect on exhaust fans. A 10 mph wind creates a 0.05” pressure against the fan. A 20 mph wind creates 0.20” pressure and 30 mph a 0.45” pressure. These pressures are in addition to the static pressure in the building. Wind blocks or hoods should be included in all designs where fans will be subjected to winds above 10 mph.
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