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Venting of Protective Covering System
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| The venting system is necessary to reduce heat build-up and reduce the potential for condensation, which preserves the stained glass windows. |
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Vitreous Paint
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| A mixture of ground glass and metallic oxides used to paint on glass. |
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West End
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| The west or entrance end of the church is the people's area. Usually the large west wall has the rose window. It is not necessarily compass west. |
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White Glass
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| Term often misused for clear glass. |
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Window Glass
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| Clear glass. |
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Wispy
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| Cathedral glass containing white cloud-like steaks. |
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Z-Section
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| A Z-shaped metal extrusion found at the perimeter of the sash. |
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