This is Rheem Ruud Emerson 143-0018-00 Phase Filter  used part. 

This part was removed by HVAC installer from a fully functioning system in November (2021). 

This part was in good working and cosmetic condition when removed. Please see more details from the images attached, pictures are the part of description. 

Please learn the images carefully, you will receive exactly the item pictured.

FREE USPS Priority mail guaranteed.

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 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.