Glass fiber cloth flexible ducts constructed three parts: aluminum foil inner layer, medium with 25mm fiber wool optional 12,16,18,20,24 kg/m³ and outside enchanced aluminum foil.Max temperature range from -30 °C-120°C,max operation air pressure 250 mm WG. Size ranges from 2inch to 16 inch, 10 meter or 7.6 meters length as standard,high flexible to fit on round or oval connections.
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