O'Hagins, Inc., America's Leading Attic Ventilation Company

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Products: Composition

O’Hagin’s Products:

O’Hagin’s Resources:

Free Vent Calculation

Installation Instructions

AutoCAD Drawings

Installation Instructions for Composition Shingle, Slate & Shake Roof Applications
– O'Hagin's Standard, WeatherMaster™, Fire & Ice® Attic Vents

Flame & Ember Resistant Product Sheet

Installation Instructions including Alternate Shingle-Over Finish Method (English & Spanish)

Wind-Driven Rain and Snow Resistant Product Sheet

Enlarged Detail of Alternate Shingle-Over
Finish Method (English & Spanish)