Superior - F3437 - Refractory Panel Kit (H0640) - Used for Lennox Fireplace Models LBC-4324, LBR-4324; LSO-43 and Superior Fireplace Models LBC-4324, LBR-4324, LSO , UVFC-5000 & UVFR-5000 (Part / Catalog #'s 11M73, 11M71; H0303, 042804, 042802, 85L06, 85L05, F3437)