Roof Mount WHF Options *** Note: These combinations are for sealed attics with no ventilation.
Products HERS CFM Watts watt/CFM Venting Home Size @ 1.5 cfm/sqft
RM-WHF-4.0-DB 2204 415 0.19 N/A 1469
RM-WHF-4.0-DB (Quantity 2) 4408 830 0.19 N/A 2939
RM-WHF-4.0-DB (Quantity 3) 6612 1245 0.19 N/A 4408