VEVOR Shutter Exhaust Fan, 305 mm /12 inch with Temperature Humidity Controller, EC-motor, 904 CFM, Variable Speed Adjustable Wall Mount Attic Fan, Ventilation and Cooling for Greenhouses, Garages, Sheds free-shipping The fillable base lets you

The fillable base lets you adjust stability by adding water or sand

Overall dimensions: 100cm x 50cm x 10 cm

50% shade blockage for UV protection

Adjustable backrest and armrests for personalised comfort

35-degree swivel adjustment on both sides for optimal viewing angles

VEVOR Shutter Exhaust Fan, 305 mm /12 inch with Temperature Humidity Controller, EC-motor, 904 CFM, Variable Speed Adjustable Wall Mount Attic Fan, Ventilation and Cooling for Greenhouses, Garages, Sheds free-shipping The fillable base lets youKeep your home well ventilated and comfortable with this powerful 904 CFM exhaust fan that removes excess moisture and heat efficiently while using minimal energy. The automatic winter shutdown and temperature humidity controller help maintain your home's temperature, reducing heating costs and preventing condensation issues. 304 mm (12 inch) shutter exhaust fan with EC motor and variable speed control High airflow of 904 CFM (1500 m h) at 1650 RPM