Flex type flexible ducts are produced in diameters range 80 to 500 mm in 6 meters long sections and sheet thickness range 90 to 120 microns in two types:
ALNORFLEX - aluminium duct with thermal resistance +250°C, available in standard 3 meters long sections pressed to 1,2 meters.
STALFLEX - acid-resistant duct with thermal resistance +500°C, available in 3 meters long sections, without pressing.
