White Acrylic Coated Natural Pine Roof Window. FSC Certified. BBA Approved (02/3944). Semiautomatic pressure ventilation V40P to prevent wind gusting. “topSafe” security and safety offering reinforced hinge and keep together with a steel slat to the lower part of the sash to achieve at least class III safety as per EN13049. With P5 Triple Glazing. Suitable for pitches 15°-90°.