Greetings. I've been reading these forums for awhile now and love all the information that's provided. Alot of knowlegable people here I live in a condo with a built-in fireplace and would like to replace it with an insert, either pellet or wood burning. I'm not quite sure what model the existing firebox is, but the front dimensions are 40x32, measured from the edge of the surround. I haven't been able to measure the depth, but it looks like it can be pretty deep. My questions are: 1. Can I put an insert into that space? 2. What would people recommend as far as brand? (Reliability, ease of use, comfort) 3. Pellet vs. Wood burning? I do have access to free wood. Alot of times, it just needs to be cut and split. I've attached pictures of the existing FP. I really appreciate everyones help!!