One 11” filter queen defender replacement medi-filter cartridge.   The filter queen website says this model is 11” across and fits older models but it does not tell me the model numbers.  Please check your current filter to make sure it measures exactly 11” diameter (not 11.25”).    I will not take returns on this item as it is heavy and expensive to ship!

Measures 8” tall inner diameter approx 7.5”. This filter has no brand name or serial numbers printed on it.  I purchased it an estate sale. (It has a random sticker with number)  See photos. 

Bin closet 171213