Patented reinforced design for longer life and better efficiency than standard expanded wicking filters. Traps impurities in the water. Anti-microbial treated. Fits Essick Air/Emerson HD120, 1100, 1102, 1200, 1202, 1204, 1212, 1214, 1300, 1300W, 1301, 1303, 1305, 1405, 1406, 1407. Fits Kenmore 14515, 14417, 14452, 14453, 14454, 14911, 144150, 144151, 144170, 144521, 144522, 144523, 144530, 144531, 144532, 144533, 154140, 154200, 42.14452, 42.144353, 42.14454, 758.144150, -144151, -144170, -144171, -14452, -144520, -144521, -144522, -144523, -1445630, -144531, -144532, -154533, -154140, -154200, -155171, -299751C, -299752C, -299870C.