High finned tubes High Finned TubesFin-material: aluminium (some versions copper as well)Base-tube-material: all materials (embedded types are limited)Maximum length: up to 20 meters. More information >> Base tube diametersInchmm5/8″3/4″1″1 1/4″1 1/2″1 3/4″2″15,8819,0525,4031,7531,7544,4050,80fin-heightsInchmm3/8″1/2″5/8″9,5512,7015,8number of finsfins per inchfins per meter789101112275315354394433473 Type L Temperature 130°C (270°F) Type KL Temperature 250°C (480°F) Type LL (double L) Temperature 165°C (330°F) Type G (embedded) Temperature 400°C (750°F) Type Extruded Temperature 310°C (590°F) High finned tubes Type L, KL, LL, G and Extruded More info Low finned tubes More info Louvers Manually or automatically More info