FSC Certified|BBA Approved (02/3944)|Semi-automatic 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|External aluminium colour reference RAL7022|Natural Pine wood frame|Internal finish 2 layers of white Acrylic varnish|Bottom placed handle with 2 micro opening positions|Glass construction 4H-Tg15Ar-33.2mm overall thickness of 26mm with an anti-burglary class of laminate 33.2 (class p2a)|External tempered glass, Warm TGI Spacer filled with inert Argon gas|Internal pane has two 3mm thick sheets of glass with layer of PVB Plastic membrane between them, on the inner side of the laminated glass there is a Low emission coating producing a U-Value of 1.2W/mK (glass U-Value 1.0W/mK)|Acoustic rating 35Db (-1.-3)|Can be used on roofs with pitches between 15-90