4" Round Open Screen Vent - tab style, brown - bag of 4 Screened vents - tab style 5" Round Open Screen Vent

5" Round Open Screen Vent w 1/8" mesh

They have a screen to keep insects out

These round aluminum vents have a strong 1/4" screen to keep insects out

These small round aluminum vents have a strong 1/8" screen to keep insects out

4" Round Open Screen Vent - tab style, brown - bag of 4 Screened vents - tab style 5" Round Open Screen Vent4" Round Brown Open Screen Vent, tab style bag of 4 RSTB 100 4" 4PK These round aluminum vents have 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