From its founding roots as a roofing company over 40 years ago, O’Hagin’s, Inc. has grown into an internationally-recognized designer and manufacturer of top-quality, state-of-the-art attic ventilation solutions. Today, O’Hagin’s, , Inc. has local and national testing approvals; is recognized for its industry-leading efforts in research, development and testing; and holds multiple domestic and international patents with many more patents pending.