Draft Inducer kit for Classic models with flat front STEEL door. Bolts to existing draft hood (Includes fan & fuses). Must use 5-amp fuse. Use for Classic 5036 NON-TITANIUM models with serial # range CL501230-CL501264. Use for Classic 6048 NON-TITANIUM models with serial # range CL601232-CL601342. Use for Classic 4030 TITANIUM models with serial # CLF400000 and up. Use for Classic 5036 TITANIUM models with serial # CLF500000 and up. Use for Classic 6048 TITANIUM models with serial # CLF600000 and up.