6" Round Open Screen Vent, black - bag of 2 No Screen vents - tab style Not meant for materials like

Not meant for materials like metal

5" Round Open Screen Vent with 1/8" mesh - white - bag of 6

6" Black Open Screen Vent

They do not have a screen

4" Round Plug - mill color - bag of 4

6" Round Open Screen Vent, black - bag of 2 No Screen vents - tab style Not meant for materials like6" Round Black Open Screen Vent bag of 2 RBLS 100 6" 2PK These round aluminum vents have 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 6 inch round hole. 16. 970 si nfa (square inches of net free ventilation area) Bag of 2 vents. Made in the USA.