Mullions definitions

Mullions

1) Vertical window pieces
Found on https://www.crosswordclues.com/clue/mullions

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Mullions

The structural units that divide adjacent windows.
Found on http://www.architecturaltrust.org/outreach/education/glossary-of-architectu

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Mullions

The vertical divisions in window frames.
Found on http://www.woodworkersuk.co.uk/blog/carpentry-and-joinery-glossary/carpentr

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