... Frame colors available in White and others 2) Available with multi-panel, multi-track by-pass and pocket 3) Thelargest open ... space can reach the 1/2, assuring good ventilation4) Good air-tightness, water-tightness, sound and ... , Powder Coating, Fluorocarbon Coating, PVDF Painting, Break-Bridge and Heat Insulation, Film Attaching. 9) Hardware system: High quality ...