Find the GFD40 (Serial# GFRN400 / GFRE400 / GFCN400 / GFCE400) Temco Gas B Vent Fireplace in the diagram listings shown below. Each diagram will take you direct to the GFD40 (Serial# GFRN400 / GFRE400 / GFCN400 / GFCE400) Temco Gas B Vent Fireplace repair part listings and part views for your model.