The four-chamber system for the door belongs to the most energy-efficient solutions of this type of constructions. Tha large size door can be obtain thanks to high system stiffness and durability. Specially designed, compatible profiles enable easy connection door with glass-cases. The structural depth of the frame and vent is 78 mm. The system can use the wide range of hardware and door locks. The system allows to make as well kneaded as twisted corners and has a variety of threshold solutions (also PVC one) to guarantee the best wather and thermal insulation.

aluminium profiles 
EN AV-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
Thermal insulation 
heat penetration coefficient (of frame) Uf = 1,7-1,9 W/m2K
fillings 
single or packet window panels with any kind of glass or opaque panels
surface finishing 
powder coating with polyester on chromate undercoater accoording to Qualicoat standards, any RAL colour at choice; anodized in colours: natutal aluminium, olive, champagne, gold, old gold, brown - according to Qualanoad standards, lacquered for colour imitated wood
gaskets 
synthetic caoutchouc EPDM according to DIN 7863 and standard according to DIN ISO 3302-1, E2
connecting accessories 
corner joints, screws, tap bolts, aluminium washers, inox or galvanized
furniture 
renowned companies only: Fapim, Savio, Iseo, Cisa, Geze, KFV, Maco, Winkhaus etc.
permissions and quality certificates 
Type tests according PN-EN 14351-1:2006