About Master Flow™ Circular Louvers

The GAF Master Flow™ High Impact Resin Circular Vent is an easy-to-install option for providing critical intake ventilation at hard to ventilate areas. Product snaps into place. The one piece construction eliminates the need for screen.


  • RLSC-2" (51 MM)
  • RLSC-3" (76 MM)
  • RLSC-4" (102 MM)

Features & Benefits

Product Documentation