Martin industries was bought out by monneson hearth systems . When they acquired the the company they didn't buy any of the liability . Which means parts for the Martin Industries fireplaces are...
They are in business in Orillia,Ontario,Canada.As far as I can find out, they no longer make woodstoves. I hope to be corrected, as they made very good airtight woodstove, that were formerlly named...
It MAY be convertable by changing the orifice. Different heat values get different sized holes in the orifice. Would check with a qualified gas appiance repairm service to see if YOUR fireplace can...