RETROTEC

individual components for a leak enclosure integrity system, namely, power-operated blowers

digital pressure gauges that feature controls for a power-operated blower and that measures differential pressure, records and processes data measurements with sensors, all as part of a leak-enclosure integrity system

cloth vent cover for the purpose of closing off an opening to an HVAC duct and for the purpose of housing the power operated blower in a leak enclosure integrity system