4" Round Open Screen Vent, brown - bag of 4 Rain Barrel Vents 1/4" mesh - bag of

1/4" mesh  - bag of 6

RRBS-100 4" 4PK

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

These round vents are made of aluminum and have a screen reinforced by strong 1/4" mesh to keep insects out

metal or PVC pipe

4" Round Open Screen Vent, brown - bag of 4 Rain Barrel Vents 1/4" mesh - bag of4" Round Brown Open Screen Vent bag of 4 RBS 100 4" 4PK 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 4 inch round hole. 7. 380 si nfa (square inches of net free ventilation area). Bag of 4 vents. Made in the USA.