Fondital Aleternum for 2-Pipe Steam SystemsModern 2 Pipe Steam Systems Our 2 pipe steam alternum readiators are designed for efficient, reliable heating in residential and commercial buildings. Built from high performance aluminum, these modern radiators provide faster heat response, lighter weight, and a cleaner profile than traditional cast iron radiatorsmaking them ideal for both replacements and new installations. Engineered specifically for 2 pipe steam systems, these radiators are not