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| двойная оконная рама | |||
однокамерный стеклопакет (A double glazing unit is a combination of two panes of glass spaced apart with a spacer bar and sealed with a primary and secondary sealant to form a single airtight unit with an air space in between.  saint-gobain-building-glass.com) | |||
| блок с двойным остеклением | |||