This is LENNOX A55 M1-6 REV C 34M52 Control Circuit Board 49L5501 with A56, A57 included used part. 

This part was removed by HVAC installer from a fully functioning system. This part was inspected by professional HVAC technician and was in great working condition when removed. 

Part is in excellent cosmetic condition as well. 

Please learn more details from the images attached. Please check images for cosmetic condition because you will receive the same item as pictured, or a very similar one.

I am offering a FREE Standard mail delivery and 30 days FREE returns. 

My handling time is 1 business day only. 

Purchasing used parts you agree with the statement that sometimes hidden defects or malfunctions may occur during installation or continuous use. There is no warranty on used parts. But you have 30 days satisfaction guarantee and 30 days FREE returns!

 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.