BestAir 16"x25"x5" MERV 11 Air Bear Pleated Air Filter. It is electrostatically charged and lasts up to 1 year. Effective against pollen, mold, bacteria, dust/lint, and virus carriers. Fits Trion Air Bear Model 455602-125, Supreme 1400, 1400, Skuttle Model DB0-0025-016, GeneralAire Model MAC1400, Source1 Model S1-MAC10162505, Ultravation Model 90-006.