(57) A window having an inside and an outside and comprising a frame (10), an sash (20)
and two sets of pivot arms (32, 33, 34) which are movable in respective movement planes
that are mutually parallel with and perpendicular to a rotational axis around which
the sash is rotatably affixed by means of set of pivot arms on mutually opposing members
of the frame and a guide (40) which is arranged at the frame for guiding the movement
of the sash relative to the frame. At least two seals (51, 52) are arranged, one outwardly
of the other, wherein when the window is closed one seal (51) sealingly abuts a first
sealing surface (42) provided on the guide, and against a corresponding first sealing
surface (25) arranged on the sash.
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