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O'Brien Doors is family owned and operated by Kimberly and Seamus O'Brien. Seamus has been in the business since 1988, providing 23 years of experience. We work on residential garage doors, garage door openers, commercial doors, truck doors, and loading dock equipment. We also service gate openers and hollow metal walkthrough doors. We offer 24 hour service. Call us for a free estimate today! (410) 482-2666 or toll free at 1-(855) 844-DOOR (3667).