The GAF Master Flow internally braced turbines are efficient, easy-to-install venting options for your roof. They allow heat and moisture-laden air to escape your attic, helping to extend the life of your roof. They are designed with upper and lower steel ball bearing systems for years of trouble-free operation. The adjustable base allows for installation on virtually any roof; from 2:12 pitch up to 12:12 pitch.
Base also has extra-large flashing for easier installation and superior weather protection
Head has Heavy-Duty steel spider braces for strength and durability
Dual-bearing system with encased design helps to prevent dirt, dust, sand, and other foreign materials from damaging the bearing, resulting in a smother spin
Permanently lubricated track system of dual bearing system ensures years of trouble-free spinning
Texas Department of Insurance
Covers up to 500 sq ft with intake NFA of 120 sq. in.