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Belt-drive pulley allows quieter operation 2-speed wall switch UL listed with thermal overload protection Shutter included
| | Air Volume (CFM): | 6900.0 | | Length (Inches): | 40.5 | | Material: | Metal | | Package Contents: | Whole-house Fan, Automatic Shutter, Two-speed Wall Switch | | Shutter: | Yes | | Width (Inches): | 40.5 |
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