DUBAL-45 Aluminium Radiator 4 Sections. Sectional radiator, made from die-cast aluminium alloy. Reversible model. Special attention has been given to the design, as this is the first time this dual aesthetic formula is presented. One side features the classic look of an aluminium radiator with front openings for high thermal efficiency, while the other side replicates the elegant line of the well-known DUBA radiator, which Baxi Heating has successfully introduced in the European heating market.