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 HD-07W, 08W, 08WV, 10W, 12W, 12WV, 13W, 14W, 15W, 6000, 8000, 8001, 50000, 60002. Fits Kenmore 14012, 14106, 14160, 14408, 14412, 14414, 14420 ,14424, 14808, 29966, 29967, 29968, 29969, 29970, 29971, 29974, 29976, 140120 ,140130, 140131, 140140, 141060, 141062, 144080, 144100, 144120, 148080.