| Anti-bird Mesh The strengthened anti-bird mesh design changes from button type to bolts&nuts type, which effectively aviods transportation damage. | Spring and Pulley 1. Reset spring and pulley support are stainless steel for longer service life. 2. Special designed pull rod pulley in which the steel wire rope or connecting rod can be put ensures flexible open and easy installation. |
| Light Trap Light trap can be offered as request and is connected by bolts for easy installation and less cost. | Air Guide Plate Air guide plate can be offered as requests which can be adjusted angle according to the window size. |
