To the already famous series C-BOX, integral Rafipal in own production new series C-BELT, which mounts centrifugal fans to double aspiration with indirect coupling by means of belts and pulleys. Available in version monophase (till 2 CV) or trifase. The carrying structure is realized in profile extruded of aluminum EN AW 6060T5 from 30X30 milimeter and 50X50 milimeter in the greater ransoms. The tamponamenti are constituted from wall panels double (sandwich) in steel sheet metal galvanized and inner schiumati with polyurethane having class 1 medium density of 40 kg/mc. ; all the panels are fixed to the structure from the outside by means of screws to embed in appropriate endowed nylon bushings of cover. The door is mounted on hinges at sight and is equipped of handle of removable fixed closing or (hexagonal); in option the door with lock is available. All the fans are mounted on only slab in steel that incorporates also the motor, to the aim to create an only body structurally much rigid one. In option he is available kit super antivibrating that he comprises the appropriate springs on the slab of support of the fan and a joint antivibrating in burlap fixed polyester between the pressing mouth and structure of the box.