A variant of PE78N system intended for the constructions of a particularly high requirements for thermal insulation. Thanks to the special inserts there can be obtained very high thermal insulation.
In more insulated PE78N HI version - with closed glass chamber and insulating insert, the U_f frame heat transfer coefficient equals 0,9 W/m²K. In the most insulated (PE78N HI+) version - with closed glass chamber and insulating insert made of aerogel, the frame heat transfer coefficient equals 0,7 W/m²K.

Aluminium profiles
EN AW-6060 according to PN–EN 573-3 T66 according to PN–EN 515 Al Mg Si 0,5 F22 according to DIN 1725 T1, DIN 17615 T1.
Gaskets
EPDM synthetic rubber according to DIN 7863 and standard according to ISO 3302-01, E2.
Hardware
Renowed comapanies only: Sobinco, Savio, Siegenia, Winkhaus etc.
Fillings
Single or packed window panels with any kind of glass or opaque panels of width: 23-61 mm.
Surface finishing
Powder coating with polyester to the Qualicoat standards, any RAL colour at choice: anodized in colours: natural aluminium, olive, champagne, gold, brown - according to the Qualanod standards, lacquered for colour imitating wood.
Permissions and certificates
Initial type tests according to PN-EN 14351-1.
Certificate of conformity: 2nd RC class of antiburglary according to PN-EN 1627, 3rd RC class according to PN-EN 1627.