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The Technological Leader in Attic Ventilation
30 Million Products sold. Generations of Trust.
O’Hagin sets the standard for quality, innovation, and performance in attic ventilation. As an industry-leading designer and manufacturer of premium ventilation products, O’Hagin has earned the trust of generations of roofers, builders, and architects, with more than 30 million products sold.
Ridge Vents
Crafted with noncombustible, corrosion-resistant material specifically to meet the new WUI building code
Patented stainless steel fine/flexible wire filament • Integrated high wind diverter
(Shown with ridge cap shingle installed.)
Pitch Perfect™ Metal Ridge Vent Learn more >
Off-Ridge Vents
Featuring innovative, patented designs and advanced WUI-compliant technology, our products combine superior craftsmanship, exceptional durability, and decades of proven reliability to meet today’s most demanding building and environmental challenges.
Tested. Proven. Trusted.
Regional Brands & Upgrades
O’Hagin Vent Calculator - 3 Simple Steps
1
Determine Square Feet of Code-required Ventilation
2
Convert Square Feet to Square Inches
3
Determine the Adequate Number of O’Hagin Vents
Pre-Construction Services
Measurements · Calculate · Presentation — from basic information to a detailed vent plan, free of charge.
Serving Architects, Builders and Roofing Contractors
Find a Distributor Near You
With over 1,000 national distributors, find one near you.
View our Products in Use
Check out our gallery to see O’Hagin’s superior attic ventilation products.
