damper in fireplace
I am about to install a Nat. gas fireplace insert with 4" aluminum duct work to the top of the chimney.
The damper will be in the way and will have to be dealt with.
1-do I need the damper at all or can I just leave it open?
2 or should I cut a hole into the damper to allow the duct work through and then attach to the stove or
3 can I remove the damper and handle altogether as the unit will have glass doors etc?