Hello everyone. My name is Kirk and Im new on here so I hope you can help me.I have a Keeprite gas furnace installed in Jan 91.Its a 69,000 btu model with standing pilot light....The rating plate is missing and the gas utility has shut it down.Does anyone know if there is a serial or model number anywhere else on the unit? It needs a cleaning but other than that its fine (no CO. or gas leaks and burners are working fine)...........so unless I can ID. this unit I have no heat......thanks Kirk