I got this older insert earlier in the Summer and have finally gotten it ready for instal. Replaced thermostat, variable speed fan control switch and all gaskets. Sanded and repainted all metal parts and put stove black on the cast doors and added the square to round flu adapter. Got it all put together and cured. All that awaits is install which I hope to do this weekend. Will be re-lining with a 7" flex liner (the size chimney depot said I needed based on original square opening size), doing Roxul and block off. Looking forward to a warmer winter.