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.
Cobra rigid vent 3 exhaust vent for roof ridge allows heat and moisture to escape at the ridge.
It provides 18 sq.
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.
Cobra hip vent provides effective ventilation on hip roofs with little or no ridge area.
Inches per linear foot 26 454 m 2 lm of net free ventilating area.
It provides 12 5 sq.
The integral weather fighter filter helps resist all types of weather infiltration.
It provides 9 sq.