Inquiry (采购产品): 4000F+ furnace air stm Do you make furnaces with air or combustion gas atmospheres and what is the maximum temperature? David DeCoursin consultant 5740 Pineview Ln. No. Plymouth, MN 55442 763-550-9686 **** Hidden Message ***** David DeC0ursin 5740 Pineview Ln No Plymouth, MN 55442 USA Company: consultant self-employed Phone: 763-550-9686 E-mail: annedavid@comcast.net **** Hidden Message ***** annedavid@comcast.net