The integral weather fighter filter helps resist all types of weather infiltration.
Gaf cobra attic ventilation.
The first step is to check out this 60 second video and learn about the 300 1 rule the difference between intake and exhaust ventilation and why proper ventilation is so important to get right to help calculate your attic ventilation needs visit gaf ventilation calculator.
Inches per linear foot 26 454 m 2 lm of net free ventilating area.
It provides 18 sq.
Cobra ridgerunner exhaust vent for roof ridge allows heat and moisture to escape at the ridge.
Cobra hip vent provides effective ventilation on hip roofs with little or no ridge area.
It provides 12 5 sq.
Inches per linear foot 19 051 mm 2 lm of net free ventilating area to help exhaust heat and moisture from the attic.
It provides 9 sq.