Frame depth: 78 mm
Thermal resistance: up to Uw= 0,84 W/m²K
Sound proofing: up tp Rw,P = 48 dB
Air tightness: class 4 (DIN EN 12207)
Water tightness: class E1050
Opening: tilt/turn inwards; the opposite side of windows with mullion can be locked with a hidden latch
In order to ensure weather and water tightness, horizontal wood portions are protected from the exterior by aluminium water bars.
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