4" Round Screened Vent, black - bag of 4 Open Screen vents tab style - bag of

tab style - bag of 6

They do not have insect screens but screen could easily be added

4" Black Open Screen Vent

3" Round Copper Vent

Insect screen could be easily added

4" Round Screened Vent, black - bag of 4 Open Screen vents tab style - bag of4" Round Black Screened Vent bag of 4 RLBL 100 4" 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 4 inch round hole. 3. 980 si nfa (square inches of net free ventilation area). Bag of 4 vents. Made in the USA.