ActronAir Indoor Evaporator Fan Deck 9x9 T 1/2HP ECM is the lower-power T-configuration ECM deck for ESP Plus and Classic Series indoor units where the 1/2HP rating suits smaller-tonnage units with less restrictive duct systems, combined with T-mount orientation matching the specific housing of the target unit. ECM motors in this assembly have internal thermal protection -- repeated overtemperature events cause permanent degradation of the motor drive electronics before winding failure occurs. Isolate power at mains before replacement -- live work on fan assemblies is dangerous and must only be performed by a qualified technician.