Factory price different size Bi-folding interior folding doors/Aluminum vertical folding windows on China WDMA Type:aluminum bi-folding window it is wide field of

it is wide field of vision and high lighting rate with large frame and glass

CE for European markets Glass Standard:  Comply with AS2208 & EN STANDARD Structural glazing:  Comply with AS1288 2208 Opening style:  glass louvered Windows Glass specification:  5mm+12A+5mm

Size: as per customers' sizes

powder coating surface is better

Frameless glass door

Factory price different size Bi-folding interior folding doors/Aluminum vertical folding windows on China WDMA Type:aluminum bi-folding window it is wide field ofBi 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