Sash : It is obtained by using 2mm pvc sheet covered by 0.2 mm Adofilm pvc foil on the wooden internal structure. Kraft honeycomb or semi solid chipboard can be used as internal filling.
Frame and cornice : Made of wood composite (CRP) material and covered by Adofilm PVC foil with a high PU (Polyurethane) E1 quality glue. The cornices have an adjustable feature to be attached to the frame on both sides.