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1.Good insulation---Less heat Escaped, 2.Fire-Resistance, 3.No Corrosive---Not Corrode the Alu. Pipe and Metal Parts. - details see: https://www.machineto.com/insulated-aluminum-flexible-duct-10248281

Specification:

1.Dimension:40-750mm(1.5-30")

2.Single Duct: One Layer of Alum Foil + One Layer of PET

3.Teperature range:0°C-140°C

4.Velocity Of Air Flow (MAX.):30m/s

5.Working Pressure:2500Pa

6.Thickness Of Fiberglass Insulation :25MM

7.Density Of Fiberglass Insulation:20KG/M3

8.Standard Length:10m(As customer's requirement)