I have a Emerson Quiet Kool air conditioner. It is a through-the-wall
unit. Although it looks like a very old model (still in brown color),
it cools the room quite well. I want to clean its air filter. But I
cannot figure out how to get access to the air filter. Unfortunately,
the air conditioner comes with the old house and I don't have the
manual. Moreover, I cannot find the company "Emerson Quiet Kool" in the
web. Seem like it has disappeared, or it has been bought out by Fedder
or something. Anyway, I cannot find the company or its product in the
web nor in Fedder web site. I need your help.

Where can I find old manual of Emerson Quiet Kool air conditioner?
What's happened to the company?

Thanks in advance for any info.

Jay Chan