1.5" Round Open Screen vent w 1/4" mesh, black - bag of 6 No Screen vents - tab style They fit into the hole

They fit into the hole made by a drill-type hole saw and are held in place by 4 tabs on the side of the vent

6" Round Brown No Screen Vent - bag of 2

Fits into a 4 inch round hole

Available in 2 and 3 inches

Insect screen could be easily added

1.5" Round Open Screen vent w 1/4" mesh, black - bag of 6 No Screen vents - tab style They fit into the hole1. 5" Black Open Screen Vent, 1 4" mesh bag of 6 RBLS 104 1. 5" These round aluminum vents have a strong 1 4" screen to keep insects out. They are easy to install in wood. 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. Not meant for materials like metal, glass or PVC pipe. 1. 030si nfa (square inches of net free ventilation area). Bag of 6 vents. Made in the