Founded by Louis Caplan in Baltimore in the early 1920s, Caplan Bros. Glass repairs and replaces residential and commercial glass, with custom fabrication and emergency service at the heart of its work. The company grew from a family venture serving Central Maryland into a Baltimore operation with a 55,000-square-foot warehouse and a 2023 College Park office serving the Washington, D.C., area. It is particularly known for responding to broken glass and damaged commercial entrances, often securing openings the same day or around the clock.