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Windows and doors energy efficiency calculator OKNA.ua

Date: 7/15/2025. Database version: 1.13. Software version: 2.1.
The calculated values ​​correspond to the quality produced and installed window (window unit) of the selected components with the given window dimensions.
Windows that do not meet the quality standards of production may not provide design values due to increased air permeability and other negative factors.
The calculation results are reference.

Sellers windows profile OPEN TECK in Brovary

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  5. The plant "VSD PLUS" started and successfully works for 15 years, taking the leading place among ...
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