For extruders using induction heaters, Masterwatt offers a special version of Ventilisorad. These are insulation crankcases in this case they are designed and built in 4 mm thick aluminum with 1 or 2 walls inside and free of magnetic materials to comply with the safety directives related to the reduction of the magnetic field in the areas adjacent to the system, provided for this type of application. These insulation housings are also supplied painted, and on request, they can be equipped with conveyors.