Injection molded frame with smooth aluminum louvers that automatically open when fan turns on, and close when fan turns off to keep out air, insects, and dust. Balanced shutters for complete automatic service-free operation. Measures 37-3/4″W X 42-1/2″L OD, 40-1/2″L X 35-7/8″W Opening Size.
Highlights:?
- Size : 36″
- Color – White enamel finish
- Automatic
- Standard
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