Insulated Flexible Duct (al-foil duct,air duct) Model No:ZXLRG02 Feature: Specifications: 1. Full flexible, high quality factory thermally insulated duct, for all pressure air conditioning and ventilation system 2. Diameter: 82mm to 457mm 3. Temperature range: -30 degree .C to 80 degree. C 4. Air velocity: Max.30m/sec(5906ft/min) 5. Working pressure: Max.300 mm WG(3000Pa or 12 WG) 6. Fireglass Thickness: 25mm 7. Fireglass Density: 16kg/m3-20kg/m3 8. Standard Length: 10m 9. We accept small order