Doors

What Is Mullion?

A vertical or horizontal member that divides adjacent glazed openings or panels.

A mullion is a structural or decorative member that separates adjacent glass lites or openings. In doors, mullions can be part of a multi-lite design or other divided opening configuration.

Buying Considerations

Check mullion width and construction when matching an existing door or specifying a custom lite pattern. The mullion design can affect both glass size and visual proportions.

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