The Weidun aluminum-clad wood doors and windows you choose must belong to one or more of the following types of opening. Please carefully read the text description that matches the article, and properly operate and apply it. swing open Actual opening operation: Turn the operating handle 90 degrees to the inside of the window to drive the handle to open the door and window. Turn off the actual operation: send the open fan to the closed state, turn the handle 90 degrees in the opposite direction of the open actual operation, and lock the open fan. Frequently Asked Questions: After the aluminum-clad wood doors and windows are opened, please maintain the manipulator to prevent operation errors when closing.