4" Round Open Screen Vent w 1/4" mesh, brown - bag of 4 Open screen w 1/4 mesh Fits into a 1

Fits into a 1

3" round PVC Termination Vent with Stainless Steel Screen

846si nfa (square inches of net free ventilation area)

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

The tabs need to be bent over from the rear

4" Round Open Screen Vent w 1/4" mesh, brown - bag of 4 Open screen w 1/4 mesh Fits into a 14" Brown Open Screen Vent, 1 4" mesh bag of 4 RBS 104 4"4PK These round aluminum vents have a strong 1 4" screen to keep insects out. They are easy to install in wood. Not made for metal, glass or PVC. 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. 7. 380 si nfa (square inches of net free ventilation area). Bag of 4 vents. Made in the USA. Orders placed by 3