A: The lower priced filters are usually the paper "Compatible" brand and the higher priced filters are either the "metal" compatible brand or the OEM/ Original. However, I did not find more than one filter for the Lennox X2660. Answer provided by:  Janice (4/4/2013)

A: It was the part I needed Answer provided by:  Roy (1/13/2013)

A: price Answer provided by:  Matthew (12/2/2012)

A: The lower priced filters are usually the paper "Compatible" brand and the higher priced filters are either the "metal" compatible brand or the OEM/ Original. However, I did not find more than one filter for the Lennox X2660. Answer provided by:  Janice Seltzer (4/4/2013)