3" Round Screened Vent - tab style, mill - bag of 4

3" Round Mill Screened Vent, tab style - bag of 4 RLT-100 3" 4PK These round aluminum vents have louvers and a screen to keep insects out.They are easy to install. They fit into the hole made by a drill-type hole saw  and are held in place by 4 tabs on the side of the vent. No nails or screws are needed. Note: These are made for thin materials like metal, glass or plastic. They do not work well in wood. The tabs need to be bent over from the rear. Fits into a 3 inch round hole.1.735 si nfa (square inches of net free ventilation area). Bag of 4 vents. Made in the USA. Orders received by 3 pm MT will ship the next business day.