Abstract: A method of manufacturing a multi-glass panel unit with a spacer frame consisting of four straight rails held together by four angular coupling means the arms of which are inserted method including the steps of arranging the rails in spaced relationship, applying an adhesive on side surfaces of the rails, pushing the rails together, mounting the glass panels on the sides of the frame, and pressing sealing material into cavities in the corners of the frame.

Abstract: A multi-glazed window having at least two window panes which are spaced apart by a spacer frame consisting of straight rails and angular connecting members in the corners, each of said connecting members having an inclined surface limiting a triangular corner chamber in the frame which is filled with a sealing and/or glueing substance which is injected through a hole in the outer wall of the spacer frame, so that the said triangular corner chamber is completely filled with the said substance, and the cavities in the spacer frame is effectively closed, so that the space between the two window panes can be completely airtight.