Sturdy duct housing made of 1.5 mm galvanised sheet steel with side service door for filter replacement. The door can be arranged either on the left or right, in relation to the direction of air flow.

The housing frame with the wide sealing surfaces is also the connection frame for connection units and air ducts. In addition to the sizes available as standard, the duct housings can be manufactured in any housing dimension for optimum adaptation to the conditions at the installation location. The filters are mounted and fastened using mounting frames. The duct housings are supplied completely assembled in all unit sizes. For larger volume flows, two units are combined next to each other. The service doors for the filter change are then arranged on the right and left.

The circumferential 30, 40 or 50 mm connection flange can be drilled on site to allow easy connection to common ducts. In addition, any transition pieces, e.g. to rectangular or round ducts, can be offered.