To determine which blower you need use this formula.
Multiply: Length x Width x Heighth of the area=Cubic Feet
Divide: Cubic Feet by CFM of blower
This gives you the amount of minutes necessary to completely change the air in the area.
Exhaust Blower-180cfm $79.99
Exhaust Blower-265cfm $90.99
Exhaust Blower-465cfm $99.99
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