lineTEC ProFlex DIBt Z-42.3-416. 100 – 250 mm / 4’ – 8’. 45° bends. Felt with PU-Foil (S, S XT) // PU-coating (S Soft, S XT Soft). No dimensional change possible. Wall thickness 5 mm(S, S Soft). Final wall thickness 4 mm(S, S Soft), 4.8mm. Hot curing with water or steam up to 70°C.