The GAF Master Flow Turbine 12 in. base can be used with roofs from 2:12 to 12:12 pitch. Base has a one piece design and an extra large flashing for easy installation. Fits most brands of turbine heads.
Pre-punched bottom and crimped collar fits tighter and makes installation easier
1-Piece design for easy adjustability up to 12:12 pitch without removing turbine
Extra large flashing for easier installation and superior weather protection
Simple adjustment
Can be painted
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