Our Universal Vent is a low profile off ridge roof vent designed for sloped roofs and can be used as an air exhaust or intake vent.
Our UL certified Universal Vent withstands wind pressure speeds up to 200 mph! Its low profile design looks great on shingled roofs as well as parapet walls. When used as an exhaust vent, it allows heat and moisture to escape. When placed at the low end of a pitched roof, it can be used as an air intake vent, similar to a soffit vent. With parapet walls, Universal vents release heat and moisture that build up within the walls, preserving the longevity of the building structure.
The inner horizontal louvers keep out rain, snow, insects and animals. This all aluminum construction will not rust, keeping a long lasting clean appearance. Because it has no moving parts, you do not have to worry about regular maintenance or part replacement. A powder coating paint option is available to match any building material.
The diameter size of all roof vents determines the Net Free Area, also known as the "NFA". NFA is the measured amount of opening each vent offers at each specific size. to be available for venting air through a specific vent size. The calculator below will find the overall number of vents needed to effectively ventilate the targeted attic space.
Once you have the area, pulldown to select the specific vent diameter to show the number of vents of that size which would ventilate the specified area with both 1/300 and 1/150 rule.
The roof vent calculation values shown above are for the exhaust portion of the roof. The same amount of net free air inches is needed for air intake as well. Proper roof ventilation consists of 50% air exhaust and 50% air intake.