This is Lennox 621-112 Defrost Control Circuit Board 86G1601 9043 used part. 

Was removed by professional HVAC installer from a fully functioning systems at February 11th 2019. 

In good cosmetic condition.  Please see more details from the images attached.

You will receive exactly the item pictured, or a very similar one. 

FREE USPS First Class mail delivery guaranteed.

You can choose USPS Priority mail 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. 

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.