Inches per linear foot 67 720 m 2 lm of net free ventilating area and its unique easytear sizing feature allows you to hand tear product in 3 76 mm increments no knives necessary and less waste.
Gaf cobra attic ventilation.
The integral weather fighter filter helps resist all types of weather infiltration.
Cobra hip vent provides effective ventilation on hip roofs with little or no ridge area.
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.
It provides 18 sq.
Cobra rigid vent 3 exhaust vent for roof ridge allows heat and moisture to escape at the ridge.
Cobra ridgerunner exhaust vent for roof ridge allows heat and moisture to escape at the ridge.
It provides 9 sq.
Inches per linear foot 26 454 m 2 lm of net free ventilating area.