Abstract: Conventional UPVC windows have casements which are pivotable and movable in a limited manner relative to the frame. It is desirable to be to move all the casements such that substantially the entire the frame is opened.
Abstract: Conventional UPVC windows have casements which are pivotable and movable in a limited manner relative to the frame. It is desirable to be to move all the casements such that substantially the entire the frame is opened.