Hello! Recently purchased a Hampton HI300 wood insert and plan on doing the install myself. Doing as much research as possible prior to starting the project. I was hoping some of the veterans here could offer some advice on removal of my damper (pics included.) Plan on using a 6" liner. Damper opening with the door removed is exactly 6 inches. Could i get by with just removing the door? If so, what would be the best approach based on this particular type. I'm completely new to this so any and all advice is greatly appreciated. Thanks!