Small Footprint ERV for Commercial or Institutional SpacesPennBarry Mini Ventilator ERV’s are 60%+ effective and perfect for applications requiring between 200 – 1000 CFM for ventilation. This range of ventilation requirement is typically found in classrooms, meeting rooms, and small retail. The Mini Ventilator is designed for indoor installation and can be floor or ceiling mounted. A removable panel is utilized to allow for easy access to the enthalpy wheel and filters.