THE STRUCTURE OF DOOR AND WINDOW FRAME

摘要

PURPOSE: A coupling structure of a window or door frame is provided to securely couple vertical column units to horizontal column units of a window or door frame. CONSTITUTION: A coupling structure of a window or door frame is formed by coupling vertical column units to horizontal column units. The front and rear side surfaces of the vertical column units are cut at an angle of 45 degrees, and the inner surfaces have protruded partition parts. The inner surfaces of the horizontal column units are cut to correspond to the protruded partition parts, and the front and rear side surfaces are cut at an angle of 45 degrees.