Photo 1 of Upgraded R40403-003 Furnace Blower Control Circuit Board, Replacement for ST9120C R40403-001 R40403-002 ST9120A ST9120B, Compatible with Armstrong Allied Ducane Magic Chef

Double tap image to zoom

Photo 1 of Upgraded R40403-003 Furnace Blower Control Circuit Board, Replacement for ST9120C R40403-001 R40403-002 ST9120A ST9120B, Compatible with Armstrong Allied Ducane Magic ChefPhoto 2 of Upgraded R40403-003 Furnace Blower Control Circuit Board, Replacement for ST9120C R40403-001 R40403-002 ST9120A ST9120B, Compatible with Armstrong Allied Ducane Magic Chef