Ok… just want to double check here. Our used regency f2100m does NOT need a damper on the stove pipe correct? We just use the knob thingy 🤪 whatever it’s called to regulate air flow?? We are hoping to install it soon and I have the double wall stove pipe for it, but need an adapter for the flue outlet. I see some come with a damper so want to double check. Thank you!!