The construction of RGS recuperators bases on the framework made of aluminum profiles. Casing consists of “sandwich type” panels filled with 25 mm thick mineral wool. There are 6 units sizes available with the efficiency from 250 to 2000 m3/h intended mainly for air filtering and heat recovery on the high-efficient counter-flow exchanger with the efficiency >80%. As an option we are also offering the heating and cooling functions. This device can be installed on the floor or hanged on the wall.