PVC insulation allows greater insulation and better resistance for a type of window composed of two or more sashes that fold over each other due to the sliding of the rotation axes located on the edges of the sash, in their central part. , up or down.
In addition to the practicable function, which is always possible, in some schemes, there is the possibility that the passage leaf is tilt and turn. In the open position, the sashes can be folded to the right or left indistinctly, thus allowing all the light of the enclosure to pass through, with openings from 3 to 7 sashes, achieving a total free width of up to 6,000 mm.
For more information about the profiles for this type of window here.
It can be combined with a Retractable Screen.