The Master Flow Roof Louver Aluminum - Slant Back With Filter (Pack of 6) is designed for attic ventilation, delivering reliable airflow while keeping pests and debris out. This aluminum slant-back vent is an excellent choice for weather infiltration control on steep-slope roofs.
Key Features & Design
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Aluminum construction for durability and corrosion resistance.
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Slant back louver design for improved weather protection on steep roofs.
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60 sq. in. net free ventilating area (NFA) per vent for effective attic ventilation.
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Contains internal Weather & Ember-Resistant Screen to deter embers, leaves, and pests.
- Fully enclosed hood deters rodent and insect infiltration and leaf/pine needle clogging.
- Internal screen meets the prescriptive requirements of Chapter 7A- Materials and Construction Methods for Exterior Wildfire Exposure of the California Building Code, 2022 edition.
- Always check with the authority having jurisdiction for approval before use.
With its emphasis on weather protection and airflow efficiency, this Master Flow vent helps maintain a comfortable, energy-efficient attic space without drama—just reliable performance. Pack of 6 ensures you’re stocked for multiple vents or future projects.
