Tim,
The Panasonic Whisperwall fan works very well. This thing is so quiet, that you can barely hear it. The link below has a lot more information, including specs, more pictures, ect. Terry

: I am having trouble finding a bath room exhaust fan.My home was built in the 50's.The original exhaust fan was vented thru the wall via a 6 1/4" diameter hole.I realize that this method is not energy efficient;but rather than purchase a newer style fan and cutting a hole in the roof to vent..I would prefer to utilize the existing hole in the wall.I have looked at Broan NuTone and several supplier web sites with no luck.Any help out there?

• The Whisperwall fan