Looking for a small whole house humidifier

I'm trying to fit a small whole house humidifier into my duct work but the problem I have is I need one with a small foot print because the top of the air handler needs to curve into the supply duct and I don't have a large area to mount this.

I was looking at the Aprilaire model 500 but this may be too large of an opening..if there are other options I would love to hear them.

I am currently using an older 700 series powered humidifier but the opening is too large. It will work, but I need to curve the new ducting on top the air handler.

I can try to post a pic later tonight, but my supply duct basically comes out of the air handler and turns 90 deg with about 12-14" of rise.

 

I don't recall the model but I've seen smaller units that were connected to the duct vis 4" hoses so the unit itself could mount somewhere other than on the duct.

 

A couple of pictures would be helpful.
http://www.doityourself.com/forum/el...-pictures.html


Marq is talking about a bypass humidifier. The unit goes on supply or return and the connecting line goes to the opposite duct.

There are remote steam models but they are quite pricey.