Find the LHEC20 (Serial# GICN / L4BO J34KC0) Majestic Gas B Vent Fireplace Insert in the diagram listings shown below. Each diagram will take you direct to the LHEC20 (Serial# GICN / L4BO J34KC0) Majestic Gas B Vent Fireplace Insert repair part listings and part views for your model.