Hello everyone I am looking to get a woodstove insert for my masonry fireplace. I've been burning for ambiance but really want to use the fireplace for a heat source. My house is very open and is a log cabin. Right now my only heat source is gas and wood is plentiful. My fireplace is small measuring 28.5"W x 24"H x 17" D. Now I have found an insert with the dimensions of 28" W x 23"H x 15"D. Would this insert be too tight? I just want to make sure I go about everything correctly. Thanks for the help