muntin
construction
Quick Summary
A muntin is a strip that separates panes of glass within a window sash. These strips are also referred to as vertical dividing bars. The term "muntin" originates from the French word "monter," meaning "to rise," reflecting how these strips project from the window. Mullions, while similar, are typically slender vertical divisions found between adjacent window lights or groups of windows, and are particularly characteristic of Gothic and early Renaissance architecture.123
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