This is Lennox Armstrong Ducane Circuit Board 100973-01 1012-83-9691A 1012-969 used part. 

This part was removed by HVAC installer from a fully functioning system in August and November (2019). Old system was replaced with newer one (more energy efficient) and was in good working condition. This part was inspected by professional HVAC installer before it was removed. 

This part is in very good cosmetic condition.  Please see more details from the images attached.

Please check images carefully because you will receive the item pictured or a very similar one. 

FREE USPS First Class mail delivery guaranteed.

You can choose also USPS Priority mail delivery for additional price.

My handling time is 1 business day only. But if I receive the money before 1 pm by Pacific Time very likely it will be shipped same day. 

Purchasing used parts you agree with the statement that sometimes hidden defects or malfunctions may occur during installation or continuous use. There is no long-term warranty on used parts. But you have 30 days FREE return option.

 Most of the parts require specific knowledge and skills to be installed properly. If you don’t have skills or knowledge, you must ask certified HVAC technician to install. I am not liable for any damages or failures as a result of improper installation.