ActronAir Indoor Evaporator Fan Blower 9x7 T 315W (T-Configuration) is the T-mount shaft variant of the 9x7 blower range, designed for Classic Series indoor unit housings where the motor shaft position differs from the standard S-configuration and requires the T-mount orientation to achieve correct impeller-to-coil alignment. Fitting an S-configuration blower in a T-configuration housing reverses impeller rotation and causes airflow loss and motor overheating -- always confirm the configuration designation against the unit service label before ordering. Isolate power at mains before replacement -- live work on fan assemblies is dangerous and must only be performed by a qualified technician.