balcony glazing system bi folding stacking sliding door with double glazing on China WDMA Built-in Blinds A: We have ISO certification

A: We have ISO certification

76+5mm        6+0

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2 ~ 4 level   Water tightness  350~600Pa 4~8 level    Air tightness  5

balcony glazing system bi folding stacking sliding door with double glazing on China WDMA Built-in Blinds A: We have ISO certificationProduct Details Glass: 5+12A+5 double glazing tempered glass maximum opening space achieved when fully open the doors by aluminum folding door. Panels connected together in a train can be hinged off both side jambs to meet in a number of ways. When open, panels remain 90 degrees to the opening. Versatile functions with swing enter or exit panel(s) options and with flexibility to fully or partially open. Ease of operation to quickly open or close wide