Housing. The housing elements are made of high quality plastics which are resistant to scratches and UV radiation. Therefore, they are perfect finishing not causing any problems during cleaning. A polyurethane foam with the thickness of 20 mm is a perfect thermal layer. Moreover, placing it between the metal walls of the recuperator framework contributes to the noise reduction. The housing of Prauzer air handling unit is made of a robust zinc-plated sheet with the thickness of xx, powder-coated (RAL 9016). The use of a classic design guarantees the protection of an insulation layer against adverse conditions, what ensures long-term and unchanged properties. The air handling unit is equipped with an adjustable base facilitating its levelling. 7” touch panel in a white housing is dedicated to control the air-supply and exhaust ventilation systems. By means of a touch panel, controlling is user-friendly, it enables the operation of all the functions of the control system. There are the following operating modes available: manual mode, automatic mode and temporary mode.