Semi retired F/F with extensive construction knowledge (self employed in the stone and tile trade) but minimal wood stove experience. Looking to insert stove in masonry FP in my house ( circa 1943) but my clearances aren't there in ref. to mantle and more severely, top wood trim facing. I have 25" from a 22" H fire box (on several models) to the mantle, with most requirements @ 30" (specifically the Timberwolf Epi22) and more critically, I have only 12" to the wood facing (1" projection) w a requirement of 22" (same model). Thru headache inducing research, I've come to the conclusion that I may be limited to a pellet, in which my clearances are all w/i range. I hate to remove replace or alter the mantle and surround, it's original to the house. I have stumbled on a insert (Lopi Answer) that does fall into all the clearances needed and would suffice my needs of supplemental heat for a poorly insulated, 1400 sq. ft. house. Any recommendations, on shields, specific models, pellet vs. wood (besides the look of the flame) and/or safe methods of overcoming these hurdles. Frustration is setting in, winter is around the corner and I need supplementary heat. I have boiler/ radiator system and don't want to overtax system like I did last year. PS my fireplace opening is 27.5H x 36W x 24D.Thank you.