4" Round Open Screen Vent w 1/8" mesh, mill - bag of 4 Plugs The louvers are closely spaced

The louvers are closely spaced to keep insects out

842 si nfa (square inches of net free ventilation area)

Note: These are made for thin materials like metal or glass or plastic

79  si nfa (square inches of net free ventilation area)

4" Round Open Screen Vent w 1/8" mesh, mill - bag of 4 Plugs The louvers are closely spaced4" Round Open Screen Vent with 1 8" mesh mill color bag of 4 RS 108 4" 4PK These round aluminum vents have a strong 1 8" screen to keep insects out. They are easy to install in wood. Not made for glass, plastic 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 the next