Lennox - H3922 / LB-98314B / 164599A / 88L64 - Back Refractory Panel - Used for Lennox Fireplace Models HC-42 / HCI-42, LMBV-42 & RD-42 / RDI-42 and Marco Fireplace Models D41CF, D41CFI , D41HC & D41HCI and Superior Fireplace Models HC-42, HCI-42, RD-42, RDI-42, UVFC-600 & UVFR-600 (Part / Catalog #'s 792794A, 792795A, 792796A, 792797A, 85L40, 93L77, 84L87, 84L88, 85L04, 85L03)