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I was wondering of somebody has a family for the South African Steel Windows. I've attached the scanned page from "Building Construction and Graphical Standards" by André Grobblaar to help explain which windows I'm looking for.
Start with the metric window library. If you can't find what you looking for and don't want to modify them, then visit some window manufacturer website and dig up their BIM content. BIMObject.com is alsoo a good resource.
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