Factory price different size Bi-folding interior folding doors/Aluminum vertical folding windows on China WDMA Type:aluminum bi-folding window Left and right punching heads

Left and right punching heads adopt hard synchronous feeding device

Size: as per customers' sizes

Factory made french glass windows folding casement window cranks floor to ceiling

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Salient is built with a responsive layout

Factory price different size Bi-folding interior folding doors/Aluminum vertical folding windows on China WDMA Type:aluminum bi-folding window Left and right punching headsBi folding interior folding doors Aluminum vertical folding door product properties Rust grades ST2 Sealing EPDM or hairbrush Opening Speed 6 9m min Running Temperature 40 70 Operating System SIEMENS PLC or DEMAG Window Material Tempered Glass Sound Insulation more than 40dB Air Tightness 2. 5m3 L h Seismic Fortification Intensity 8 degrees Electrical Cabinet Protection Grade IP55 According to design, vertical bi folding window is lifted by several