Door installing frame ferrule, has two square pipes welded with top and bottom of slats, another two square pipes designed such that they are pushed into one another and pulled apart from each other, and screws fixing door to wall joint

摘要

The ferrule has two aluminum turning slats (1) provided for perpendicular positioning of the ferrule. Two aluminum square pipes (2) are welded with top and bottom of the aluminum turning slats. Another two aluminum square pipes (3) are designed such that the pipes (3) are pushed into one another and pulled apart from each other. Two wing screws (4) are used for fixing a door to a wall joint fixed to wall using glue, cement or foam.