Simply put this is an air filtering and circulating system. Strong enough for a factory, or could be on low for a home install. About $3600 new. I'm willing to accept obo on quick pickups. Manufacturer: Airia Brands Inc. Model Series: Lifebreath MAX Series Model Description: 300 DCS *dual core* Ventilation Performance: 183 cfm @0.4 in. wg Manufacturers’ Part Number: 300 DCS Wall Controller Included: DXPL02 Core Type: Heat Recovery Ventilator (HRV) Heat Recovery Rate: 90% Moisture Transfer rate: 0%