US Patent #10,161,135,B2
Applications: Turbine Vents Roof Exhaust Fans ユ Metal Roof Vents ユ Roof Caps ユ Goose Neck Air Vent
Specifically Designed for Roof Vents with a Pre-Installed Metal Base
Opening: 11-3/4ï¾” X 11-3/4ï¾” (298 X 298mm)
Overall he
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