This rear outlet register kit helps Forsaire electric furnaces distribute heat into an adjacent room, providing a practical way to expand comfort without adding a separate heating system. The package includes a rear outlet register, damper, and 10 in. boot, all designed to mount on the rear wall directly behind the furnace for efficient through-wall airflow. Made with durable metal components, the kit functions as dependable furnace parts that help maintain a secure and stable vent path for moving warm air between connected spaces. It supports routing up to 40% of the furnace's heat output into the secondary room, provided the finished wall is located within 10 in. of the heater. The components integrate smoothly with existing furnace vent hardware and suit both new installations and replacement work, supporting consistent performance and long-term reliability in multi-room heating layouts.