Symbol of a window on the plan. GOST doors: designations and ...
All standardized doors entering mass production must necessarily have a label ... L - doors, hatches and doors, manholes. ... Seal the space between the frame and the wall with polyurethane foam. .... If metal doors are exterior, then GOST requires that the design be equipped with two or more contours of sealing materials.
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refitmagik's website is refitmagik.ru