| 摘要 |
PURPOSE: A complex window is provided to improve thermal insulation of an auxiliary frame and durability of a frame on external impact and to allow a user to easily assemble the frame and the auxiliary frame by using a connection member. CONSTITUTION: A complex window comprises a frame (10), an auxiliary frame (20), and a connection member (30). The frame is located on the outdoor of a building and is comprised of metal materials. The auxiliary frame is located inside the building by being installed on the rear of the frame and is comprised of synthetic resin materials or wood materials. The connection member is installed between the rear side of the frame and the front side of the auxiliary frame and connects the auxiliary frame to the frame. |
