Structure galvanized sheet with prepainted covering shell (in VMI-VMF-OMP-OMI models) and ABS details, complete with heat/sound insulation Regenerating filter and natural discharge moisture tray. Centrifugal 6-speed fans type, with 3 speeds connected in the standard configuration. Heat exchanger in copper tubes and alluminium fins with hydrophilic surface treatment to rapid draining of moisture. It’s recommended to use the kit valves for each type of system.