Flexible combined duct(dec-ca) This duct consists of pvc strips and aluminum foil polyester film enclosed with high tensile coppered steel spiral helix wire. Specifications Diameter range 52mm~610mm Temperature range -30 to +150 Operating air velocity: 30m/s Operating pressure max.+3000pa Bending radius min.0.54ã?d Standard length: 10m Reaction to fire: difficult to ignite Packing: single cardboard box
