Aluminum Flexible Duct kitchen flexbile Duct Aluminum Flexible Pipe 1,Struction -soft aluminum foil2,Normal thickness -0.08mm 0.10mm, 0.11mm . 0.12mm, 0.13mm,0.14mm3,Available diameters- 50mm to 300mm4,Temperature range -25°C to + 250°C5,Operating presure -2000pa (max)6,Air velocity -25m/s (max)7,Standard length-1.5m , 3.0m , 4mm the max is 4m8,Compression ratio- 1: 39,Fire resistance -non ...