This is a brand new OEM Lennox 19S83 control board with the model number 623144-01 BCC3 (75). It is a high-quality replacement part made in the United States specifically for HVAC and refrigeration systems. This control board is designed to regulate and monitor the performance of your equipment, ensuring optimal efficiency and reliability. If you are looking for a reliable and durable replacement part for your Lennox HVAC system, then this control board is the perfect choice. It is easy to install and compatible with a wide range of models and systems. With its exceptional quality and performance, you can rest assured that your equipment will operate at its best.