KENVO DOOR installed a big size manual operation thermal insulated aluminum roller shutter door for Australia client. This manual aluminum rolling up door is 6 meter wide, much bigger than normal manual roller shutter door in most projects. To avoid any operation problem, we installed one sample aluminum rolling shutter door inside KENVO DOOR factory, to test it.
The result is, the door can be easily moved up and down by hand with double side torsion spring systems as a balance to lift up the door. And such big side manual roller shutter door need be equipped with two ground floor locks at each side to lock the door slats onto ground floor, because its big width.
