3" Round No screen vent - tab style, white - bag of 4 Copper vents These round aluminum have louvers

These round aluminum have louvers and a screen to keep insects out

black - bag of 2

RBS-104 6"2PK

5" White Open Screen Vent

3" Round No screen vent - tab style, white - bag of 4 Copper vents These round aluminum have louvers3" Round White No Screen Vent, tab style bag of 4 RWT 200 3"4PK These round aluminum vents have closely spaced louvers to keep insects out. They do not have screens. 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