Lennox - H3210 - Log set used on the MPB35ST, MPB35ST-NM-B, MPB35ST-NP-B, MPB35ST-NE-B, MPD35PF , MPD35ST-NM-B, MPD35ST-NP-B, MPD35ST-NE-B, MPD35ST, MPD35PF-NM-B, MPD35PF-NP-B & MPD35PF-NE-B