This is the RC300 Replacement Remote Control Transmitter for the listed Models. For both Natural Gas & Propane Models. May fit additional models, double check your part number. Heat N Glo Gas Fireplaces: 6000CL-IPI-T & 6000CL-IPI-S 6000CLX-IPI-S & 6000CLX-IPI-T 8000CL-IPI-T & 8000CL-IPI-S 8000CLX-IPI-S & 8000CLX-IPI-T ESC-42ST – After serial # 0022120860 ESCAPE-I30-C ESCAPE-I30-F ESCAPE-I30FB ESCAPE-I35-C ESCAPE-I35-F ESCAPE-I35FB MEZZO36 MEZZO36ST MEZZO48 MEZZO48ST MEZZO60 MEZZO60ST MEZZO72 MEZZO72ST PRIMO48 PRIMO48ST PRIMO60 PRIMO60ST PRIMO72 PRIMO72ST TRUE-36S, TRUE-36H & TRUE-36C TRUE-42S, TRUE-42H & TRUE-42C TRUE-50S, TRUE-50H & TRUE-50C