The VERSO-P and VERSO-R dual-flow units are one-piece units, made up of three splittable elements; two completely symmetrical sections including fans and filters and a central section housing the heat exchanger. The heat exchanger is rotary (-R) or plate (-P) type. Accessories such as coils and dampers are mounted outside the unit. The VERSO-S single flow unit is made up of two basic elements (fan section and filter section) between which hot and cold coil sections can be inserted. Sizing: The VERSO range of units covers a flow rate range of 1,000 to 26,000m3/h with a maximum static pressure of 900 Pa. They are available in 8 sizes, thus making it possible to respond precisely to the needs of the user.