OEM 520820 RV Furnace Ignition Circuit Board for Suburban SA/SF/SFV/SH/NT Furnaces, 12VDC Control Module for SF 20/25/30/35/42, NT 12/16/20/24/30/34, SA 25/40, 521099 520741 520871 is up for auction in Appliances. The current bid is $1.00, 97% below the $39.97 MSRP, in Good Condition. This auction has ended — similar items appear in live auctions regularly.