Mullion Mullion is used as a trim between window units. It can also be used in other applications to conceal joints. Also used in frames of cabinet doors to make a mullion frame door.

MM027

27/64" x 1" (11mm x 25mm)

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MM028

7/8" x 1-7/8" (22mm x 48mm)

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MM029

3/8" x 3/4" (10mm x 19mm)

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MM030

3/8" x 11/16" (10mm x 17mm)

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