1). Side track and side seal:
                              The side track fixed the vertical track, finger protection. The side seal avoid the wind the sand get into the inside room.
                              2). Aluminum bottom rail and seal:
                              The aluminum rail looks nice when put on the door panel, and the seal avoid the wind and sand get into the inside room.
                              3). Torsion spring: spring is balance system; make the door easy to lift
                              ① spring
                              ② galvanized spring
                              4). Anti-break system(security system):
                              ①spring anti break:
                              ② cable anti break:
                              5). Window for choose:

                              Downloadsectional door accessories.rar

                              Add: 511-760# RD. Meicun Wuxi Jiangsu China     Tel: 0086-510-81155809     Fax: 0086-510-81155809         E-mail: sales@yonghong.net      info@yonghong.net