AHSN units construction bases on the framework made of aluminum profiles. Casing consist of panel “sandwich” type panels filled with 45 mm thick mineral wool. There are 8 sizes of the units available with the efficiency from 3.400 to 62.500m³/h intended for the air processing in scope of: filtering, heating, cooling, moistening. There is a possibility of applying the recirculation or heat recovery on the cross-flow or rotary exchanger, heating pipe or on the glycol exchanger. Separate versions can be freely configured if You wish obtain the adequate air processing. AHSN units can be used as serial units, multi-level units or connected parallelly. The casing is available as the internal and roof version. Roof version is additionally equipped with air intake, air exhaust, flat or skew roof, specially protected air throttling valves. These units can be installed on the leveled screed or steel construction. They are available in standard, hygienic, pool or special version. A special element is their lowered height when compared to the AHSK type units.