Wing : It is obtained by using 2mm pvc sheet covered with 0.2 mm Adofilm pvc foil over wooden shutter. Perforated Kraft honeycomb or fire-resistant and sound insulating channel chipboard (okal) is used as inner filling.
Frame and casing : Made of wood composite (CRP) material, coated with Adofilm pvc foil using high PÜ (Polyurethane) E1 quality glue. The casings have an adjustable feature to be mounted on the frame from both sides.
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