If you want an answer, we need more info. I'm assuming you bought a new INLINE fan to take out the hot air, but what are you talking about with regards to an adaptor? Are we talking about a dimmer control for the fan, or the fitting that connects to a carbon filter or what? The more detailed info you provide, the more, and the better advice you will get here. If you have pics, that is really the way to get answers, but I personally would never post a pic of any kind, for any reason, ever. But most of the people here aren't as paranoid as I am.
Let us know what's up, and you'll be helped.
Ha ha, everyone typed the same thing at the same time. Too funny. Welcome to RIU!