SmartRidge II is the 1st rigid, corrugated ridge vent with an exterior weather guard that is literally taking the ridge vent market by storm! This patented external
weather guard only allows air to flow through the vent and protects your attic from rain, sleet, and snow penetration. SmartRidge II has a NFA rating of 18 square inches per linear foot.
SmartRidge II comes in three sizes 10.5", 8.5" & 7"