Completely plastic window with integrated light excluding roller blind and mosquito protection. â?¢ Offers all the advantages of an S4 outwards opening window â?¢ Available in right-hand or left-hand versions. The rear pane is in each case fixed. â?¢ No thermal bridges. â?¢ Double acrylic glazing. â?¢ Outer frame made from highly insulating polyurethane. â?¢ Cannot warp, as pre-fitted with steel inserts. â?¢ Simple and easy to fit. â?¢ One-hand operation for roller blinds. Safe, with new security technology. â?¢ Flat-fitting window closures and openers. â?¢ With telescopic opening handles and security window closures. . Finish: Acrylic glass with grey tone. Outer frame black (RAL 9005), Inner frame creamy white (RAL 9001). Light exclusion roller blind with aluminium external surface, inner surface white. Insect protection gauze white.