4" Round Rain Barrel Vent - bag of 4 Open Screen vents These flush-mount stainless steel butterfly

These flush-mount stainless steel butterfly vents open and close with a knob in the center

They are easy to install in wood

RS-104 2"6PK

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

4" Round Rain Barrel Vent - bag of 4 Open Screen vents These flush-mount stainless steel butterfly4" Round Rain Barrel Vent bag of 4 RRBS 100 4" 4PK These round aluminum vents have a screen reinforced by strong 1 4" mesh 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. Made in the USA. Orders placed by 3 pm MT will ship by the next