5" Stainless steel round louvered vent Open screen w 1/4 mesh They do not work well

They do not work well in wood

These round aluminum plugs are easy to install in wood

4" Round Open Screen Vent with 1/8" mesh - mill color - bag of 4

BNS-100 6"2PK

3" round PVC Termination Vent with Stainless Steel Screen

5" Stainless steel round louvered vent Open screen w 1/4 mesh They do not work well5" stainless round vent 331425 1 These flush mount stainless steel round vents are held in place by #6 screws. They do not have insect screens. The louvers are spaced closely enough to keep out most insects. Insect screen could be easily added. 2. 02 si nfa (square inches of net free ventilation area). Made in China. Orders placed by 3 pm MT will ship the next business day.