... impact-reisitant and burglar-retardant water proof Minghe aluminum glass door a, unique transparent, elegant anodized aluminum frame b ... : polycarbonate thickness between 3mm to 9mm,tempered glass,mirror glass,single or dual pane are available c, ... easily h, 200 times harder than normal glass, the door resist the impact of external force and will ... safer hardwares and more functions: sectional glass door