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

4" Round Plug

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

5" Brown Open Screen Vent

Note: These are made for thin materials like metal

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

4" Round Open Screen Vent w 1/4" mesh, black - bag of 4 Rain Barrel Vents 4" Round Plug4" Black Open Screen Vent, 1 4" mesh bag of 4 RBLS 104 4"4PK These small round vents are made of Aluminum. They have a strong 1 4" screen to keep insects out. They are easy to install. 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 pm MDT will ship