Infographic: TDL vs SDL vs Mullion

Unison Windows & Doors-Blog20131024-TDL-vs-SDL-vs-Mullions

If you have ever had the opportunity to draw windows in a proposed building, you might have come across the problem of what thickness to give to Divided Lites and Mullion, and how to draw the detailed section for each. It is a detail that would only be obvious if you are directly involved in […]

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Product Insight: History of the True Divided Lite

Early architecture used mullions to achieve larger openings that did not include glass (think Roman archways). The technique was brought to Europe during the Romanesque Era, where common building materials evolved from stone to wood.

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