Sizes : 5 Airflow range : from 1000 to 6000 m³/h. High efficiency polypropylene modular counter-flow plate heat exchanger, efficiency from 85% up to 93%%. Horizontal configuration. double skin plasticized steel panels, sandwiched on injected polyurethane foam insulation. High efficiency polypropylene modular counter-flow plate heat exchanger in horizontal configuration, efficiency from 85% up to 93% , with extruded alloy aluminum profiles and a casing in double skin plasticized steel panels, sandwiched on injected polyurethane foam insulation 42 kg/m³. Available in four configuration : standard, with electric heater, with post-heating/cooling water coil, or, with direct expansion coil R410A (to be connected to a remote heat pump not supplied by Wesper). Suitable solution to achieve the highest energy certification for commercial, industrial and residential collective building. Filtration G4 (EN779) for exhaust air and F7 (EN779) low pressure drop for fresh air. Plug and play solutions with electrical panel and microprocessor control pre-wired on board Conform ErP-2015.