4" Round Copper Vent

CPR-100 4" Round Copper Vent CPR-100 4" These high quality round copper vents have a screen to keep insects out. They are easy to install in wood. Not made for glass, metal or PVC pipe. They fit into the hole made by a drill-type hole saw and are held in place by knobs on the side of the vent. No nails or screws are needed. Fits into a 4 inch round hole. 3.875 si nfa (square inches of net free ventilation area). Orders placed by 3 pm MT will ship by the next business day, inventory permitting.