4" Round Open Screen Vent, brown - bag of 4 Rain Barrel Vents This vent is designed to

This vent is designed to fit into an elbow or coupler and will not fit inside the end of the pipe

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

4" Round Mill No Screen Vent

Not made for glass

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

4" Round Open Screen Vent, brown - bag of 4 Rain Barrel Vents This vent is designed to4" 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.