I have a Regency CI2600 catalyst wood stove insert, beautiful, only problame is it gets blackening door glass in every fire. I don't use it 24 hours so that's part of reason. I am thinking to add a removable glass, similar size as the door glass, on the door frame, of course, inside the stove, just lean against the door glass, will need to install four long screws, two up and two down, half way into the door frame so it can hold the portable glass from falling into the stove. Ideally, this removable glass should get close to the door glass as much as possible so the smoke won't get contact with the door glass. After each fire, I can easily remove the portable glass, lay it on ground, spray a layer of Imperial wood stoove door glass cleaner, wait 5 minutes and wipe it off. I could make three or five pieces of this glass and clean them all at once. What do you guys think? Do I need to go for a speical glass with high melting point? Any concens on drilling four holes on the door frame? I will use a long screw and screw it half way onto the frame, leave 1" outstand, so I don't think there is any concerns of air leaking or whatsoever, but I might miss something. Handling of the glass should be careful but it's not a problem I think, just with enough cautious like you handle the glass vase.