Outswing casement windows are made of engineered laminated Pine wood, Meranti, Accoya, Oak, Sipo or other kinds. The wood used for the production is very well treated against blue stain effects and decay due to ecological friendly dipping method. The bath is performed in a water-soluble alkyd based prime coat. Our double glazing U value is 1,0 W/m2K. However, there is a possibility to use triple glazing that achieves the U value of 0,6 W/ m2K. Also, a special “warm” glass spacer can be used to achieve even better parameters of the glass. There is also a painted glass spacer available to match the colour of the casement windows and to meet individual needs.