VEVOR Roof Attic Exhaust Fan, 50W Smart Solar Roof Ventilation Fan with Thermostat, Remote Control, 3000 CFM Airflow Built-in Smoke Sensor with Auto Stop for Cooling and Dehumidification

All products on our official website come with a 12-month warranty. If you purchase a product that has a problem within one year, we will be responsible for you.

According to the standard formula, install one unit for every 300 cubic meters of space. Note that the unit is cubic meters.

 The product is an all-in-one unit, meaning one solar panel powers one fan.

The airflow rate of this unit is determined by the intensity of sunlight. Under the strongest sunlight at noon on a clear day, it can reach its peak performance, which is the maximum airflow rate advertised by your company. If this response does not resolve your issue, please contact us again for assistance.

 The temperature range for this 50W model is 60–100 degrees Fahrenheit, and there is no default setting. If this answer does not resolve your issue, please contact us again for assistance.