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1.1 ,This specification covers preassembled permanently sealed insulating glass units with one or two cavities and preassembled insulating glass (IG) units with capillary tubes intentionally left open or closed.
1.1 ,This specification covers preassembled permanently sealed insulating glass units with one or two cavities and preassembled insulating glass (IG) units with capillary tubes intentionally left open or closed.