The Goodman M1-1056 replacement filter by Magnet has a MERV 11 effiency rating. It is a replacement filter for the following:
Goodman YYB1625, FS1625 and GMU1625
Totaline P102-1625, 102-1625
BestAir Pro P102-MF14A, P102-NC14A-A, G-51625-11, G51625, G5162511, GA-5-1625-11, GA-5-1625-PR11
You can convert your electric air cleaner to a HEPA system (ELAEASASD11ASC) with this filter. You can also convert your Amana ASAS-11 EAC, Goodman GSAS-11 to a media filter system with this particular product.
Actual filter size: 15-3/8"x25-1/2"x5-1/4"
Made by FUSA.