The TV-V80 hangs in the ceiling void and trades heat between exhaust and fresh air through a crossflow core, tempering incoming air before it reaches the room. Round duct collars on both ends take standard spiral duct without adaptors.
Filters slide out through a hinged access door sized for a ladder-and-one-hand service visit. EC fans hold airflow setpoint as filters load, so the design ventilation rate survives the maintenance calendar.
