4" Round Screened Vent, white - bag of 4 Screened vents - tab style plastic or glass

plastic or glass

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

The louvers are closely spaced to prevent wasps or other insects from entering

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

4" Round Screened Vent, white - bag of 4 Screened vents - tab style plastic or glass4" Round White Screened Vent bag of 4 RLW 100 4" 4PK These round aluminum vents have louvers and a screen 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. 3. 980 si nfa (square inches of net free ventilation area). Bag of 4 vents. Made in