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Round Aluminum vents.
No screen. The louvers are spaced closely to prevent insects from entering.
Easy "Snap In" Installation.
Rugged construction (.020 - Gauge Aluminum)
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.
These vents are designed for use in wood and do not work well in metal.
3.682 si nfa (square inches of net free ventilation area)
- Item #: BNS-100 4"
- Manufacturer: Maurice Franklin
