Howdy all, My St. Croix York is up and running and it's doing all it can do to keep the house heated but it's a little shy on BTU output. I'm trying to heat and open floor plan contemp with about 2200 SF, tall ceilings with ceiling fans running and I'm running the stove pretty much flat out and it keeps the house around 70 when it's not too cold outside. The room temp drops down to mid to low 60's when it's below 20 deg or so. I am looking for a bigger insert. I have been looking for the installation dimensions required for a Harman Invincible insert but I can't find any detailed info on the net. Operator manuals are out there but nothing on required clearances inside the firebox or hopper height. Anybody have those dimensions? I searched and found some of the stove dimensions but not all of them needed to find out if it will fit. Thanks!