2200 Apex Furnace Ashford 20 AF20 Ashford 30 AF30 Chinook 20CK and 20F Chinook 30 CK24C and CK24F Early Models Phase I Insert KEJ-1300 KCJ 700 KEI 1300 PEI 1200 KEJ 1000 KEJ 1101 PEJ 1002 KEJ 1102 PEJ 1003 King Classic KE1107BK King Parlor KE1107LBK King Ultra KE1107UBK Late Models Phase II MP80 Furnace Princess Classic PE1006BK Princess Insert PI 1010A Princess Parlor PE1006LBK Princess Parlor Ultra PE1006UBK Royal 2100 Royal Guardian RGT-3001 Royal Heir Sirocco 20 SC20 Sirocco 30 SC30 VC120 Furnace