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

6" Round Brown No Screen Vent - bag of 2

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.