This is Lennox Armstrong Ducane 70K98 Furnace Control Circuit Board 40403001 used.

Was in great working condition when removed.

In very good cosmetic condition as well.  Please see more details from the images attached. You will receive exactly the same part as pictured. 

Please note that slight discoloration is typical of this board, even in its used functional condition. Most of this type used control boards have some signs of previous wear.

 We carefully check all our items before adding to listing and burned (cooked) items are not allowed.

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. 

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.