Enhanced Fan Blower Control: This upgraded PCBFM103S circuit board introduces a precise time delay feature, ensuring optimal operation of your furnace's fan blower. It's designed to improve the efficiency and of your heating system by regulating the fan speeds more effectively. Broad Compatibility: Perfectly replaces parts for , for , and for Janitrol furnaces. Compatible models include for GPC1324H21A series and more, ensuring a wide range of applications and seamless integration with existing systems. Extensive Replacement Range: This board replaces multiple part numbers such as 1005-83-1724, -B, PCBFM103, and B1370735S, making it a versatile choice for repairing furnace models. Designed for Specific Models: Tailored to fit specific for models like GPC1324H21A, GPC1330H21A, and others, ensuring a and function without the need for modifications. This targeted design helps streamline the installation process and restores your furnace to optimal working condition quickly. Also Fits for and Units: Not limited to for , this control board is also compatible with select for models such as GPH1324H21A and models including AR18-1, AR24-1, ensuring a broad application range for popular furnace and models. (The product appearance and printed words depending on the batch, but this does not affect use) Color: As Shown Material: plastic+metal Package Contents: 1 x PCBFM103S Control Circuit Board 1 x 3 amp furnace fuse 4 x insulation standoffs Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.