3" Round Open Screen Vent, black - bag of 4

3" Round Black Open Screen Vent - bag of 4 RBLS-100 3" 4PK These round aluminum 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 3 inch round hole.4.064 si nfa (square inches of net free ventilation area). Bag of 4 vents. Made in the USA. Orders placed by 3 pm MT will ship by the next business day, inventory permitting.