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CS 77 is a thermally improved three-chamber system for windows and doors that boasts the optimum combination of safety and comfort. Fibreglass reinforced polyamide strips with ribs and/or hollow chambers guarantee high thermal insulation levels. The system is available in a variety of aesthetic shapes to match the current architectural trends whilst offering all types of both inward and outward opening windows and doors. A double butt strip between the frame and sash and a lowered drainage ensure superior wind and water tightness. Different inner and outer colours are possible. TECHNICAL DESCRIPTION : Frame : 68 mm Sash : 77 mm (window), 68 mm (flush door) Acoustic performance : Rw (C; Ctr) ≤ 42 (-2; -4) dB, depending on the glazing type (EN ISO 140-3, EN ISO 717-1) Air permeability : 600 Pa (class 4) (EN 1026, EN 12207) Anti-burglar : WK 2 – WK 3 (European standard ENV 1627 – 1630) (ENV 1627, ENV 1630) Thermal insulation : Uf-value ≥ 1.90 W/m²K, depending on the frame/sash combination (EN 10077-2) Water tightness : 900 Pa (class E900) (EN 1027, EN 12208) Wind load resistance : 2000 Pa (class 5) (EN 12211, EN 12210) |
