Superior - H3496 / 16M34 / 43072 - Back Refractory Panel - Used for Lennox Fireplace Models LBC-4324, LBR-4324, LBV-4324EN, LBV-4324EP, LBV-4324MN, LBV-4324MP & LSO-43 and Superior Fireplace Models LBC-4324, LBR-4324, LBV-4324EN, LBV-4324MN, LBV-4324-MV-N, LSO , UVFC-5000 & UVFR-5000 (Part / Catalog #'s 11M73, 11M71, 11M03, 11M04, 11M01, 11M02, H0303, 042804, 042802, 065988, 71L83, 065986, 85L06 & 85L05)