I have a masonry fireplace and I'm looking to get more of the fire heat into my family room. I don't like the idea of a large insert which would surely work but at a significant cost. In searching around the web the heater grates with a blower motor seem like the option I prefer. The blower options are limited so I think I'm going to weld up my own with rectangular steel tubing. Anyone one go down this road that can offer advice? I'm thinking thick steel as I'd hate to have burn through and blow it out of the fireplace.