Production Description
Double layer rain proof regulating sunline shutters: the double-layer rain proof regulating shutter not only has the advantages of single-layer rain proof shutter, but also can adjust the opening and closing degree of the shutter according to the indoor temperature or ventilation demand, so as to make the indoor temperature more suitable. Aluminum alloy louver louver can be adjusted flexibly. It runs all year round without oil lubrication, no noise and good sealing performance.
