Warm, warmer, the warmest

Its heat transfer coefficient has been reduced to 0.51 W/mK. The currently lowest i.e. best coefficients in Europe range from 0.75 to 1.1 W/mK. Doleta’s windows have four double panes in a technologically improved frame. These are able not just to keep the house warm but also insulate it from heat from the outside and due to this are energy efficient at the same time. The Lithuanian company emphasises that they have been working on such parameters for nine years. Last year Doleta unveiled