Master Flow®

Plastic Circular Louvers

Our bestselling mini-vent recommended for hard-to-ventilate or other restricted areas
Plastic Circular Louvers
DURABLE
High-impact plastic construction for strength
EASY INSTALLATION
Just cut appropriate-sized hole and snap in place
UV INHIBITORS
Contains UV inhibitors to help last longer
Note: Always have a balanced ventilation system. In no case should the amount of exhaust ventilation exceed the amount of intake ventilation.

Protect Your Investment

Find out about product warranties and options that may help protect your most valuable assets. 

  • 4 yr. Ltd. Warranty

Available Sizes

Note:  Product sizes, dimensions, and widths are nominal values and are subject to normal manufacturing/packaging tolerance and variation.
  • Net Free Areas (NFA)
    1.5 sq. in.
  • Net Free Areas (NFA)
    3.20 sq. in.
  • Net Free Areas (NFA)
    5.17 sq. in.

Product Properties

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