Suggested Retail: $149.99. VENTISOL 20 Inch Shutter Exhaust Fan Wall Mounted. The VENTISOL 20 Inch Shutter Exhaust Fan is a powerful ventilation solution, running at 1309 rpm and producing an airflow of 3500 CFM on high for strong air circulation. It features automatic aluminum shutters that open and close with the operation of the fan, protecting it from rain and other elements when not in use. Constructed from corrosion-resistant materials, this fan is sturdy, durable, and designed to prevent rust. The exhaust fan is ideal for removing excess heat and moisture, making your living space more comfortable. It is suitable for use in home attics, workshops, factories, warehouses, barns, and greenhouses. Brand: VENTISOL. Model: G-EF. Lot Sticker: OH001-00000447-77. 7 CALENDAR DAY FULL REFUND GUARANTEE (FROM PRIMARY PICKUP DATE) ON THIS ITEM IF ANY ISSUE IS FOUND THAT WAS NOT DESCRIBED/PICTURED. 7 CALENDAR DAY STORAGE (FROM PRIMARY PICKUP DATE) IS ALSO AVAILABLE. THE PRIMARY PICKUP DATE IS THE DAY AFTER THE AUCTION ENDS. SEE NOTES TO BIDDER, IN AUCTION DETAILS, AT THE TOP OF PAGE 1 FOR MORE INFO.