PURPOSE: To selectively and sequentially manufacture a window with a vertical revolving door and that with a horizontal revolving door, with no adjustment for machine nor replacement of tools, and without wasting time.

CONSTITUTION: Appropriate measurement of a horizontal revolving door bearing 3 and the casing for a vertical revolving door bearing allows that a switching shape material or its switching strip parts 11 and 12, which are usual for windows with horizontal or vertical revolving door be formed to the same length and cross section. At least a part of horizontal revolving door bearing 3 and vertical revolving door bearing are housed in a recess common to both frames. The bearing is formed into almost identical size and form independent of kinds of bearings used accordingly.