FanTech 15220 Aluminum SER Energy Recovery Ventilator, 4" Duct, 150 CFM, 4 Port Design

The energy recovery ventilator SER 1504 is features a compact design which makes installation a breeze. The performance of this ventilator is aided by backward curbed impellers to increase the flow of air through the unit. The unit also keeps your air clean with electrostatic filters which are washable making them reusable and eliminating the need for buying replacement filters.Enthalpy energy recovery coreExternal screw type dry contacts for optional controlsImproved core guide channels for easy removal of coreThis model is not recommended for climates that experience temperatures below 23-F (-5-C) for more than 2 consecutive days.