mullion and transom

Isaac Kremer/ November 21, 2025/ / 0 comments

A mullion is an upright that divides an opening, usually a window, into two or more sections. A transom is a horizontal bar across the window. (Cole, 2017)

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About Isaac Kremer

IsaacKremer.com is the personal website of Isaac Kremer, MSARP, a nationally recognized leader in the Main Street Approach to commercial district revitalization with over 25 years of experience. Kremer, New Jersey's first certified Main Street America Revitalization Professional (MSARP), has served as founding executive director for organizations like Experience Princeton and the Metuchen Downtown Alliance, which won a Great American Main Street Award under his leadership. He recently became director of the Royal Oak Downtown Development Authority in Michigan.

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