[Jim Sims]

The muffin fan is directly in front of the lower part of the evaporator and the evaporator is encased within a plastic housing from which the main blower draws the cooled air. There is indeed the possibility of some leakage to the side of the muffin fan but I note that with it running alone (without the main blower turned on) that there is air being forced through the A/C distribution ducts under the dash. Cheers, Jim