Tier1 THF8 Comparable Lasko THF8 Replacement Humidifier Wick Filter for Lasko Cascade Models 1128, 1129, 9930, 3 Pack DESIGNED TO FIT: Fits Lasko humidifiers requiring THF8 filter, models 1128, 1129, 9930 ACTUAL SIZE: 11-3/4 inches (height) x 1 inch (width) x 1-1/2 inches (depth) HIGH EFFICIENCY FILTRATION: Reduces pollutants from the water treated to inhibit the growth of mold, bacteria, algae, and fungus FILTER LIFE: For optimum performance, replace every 2 months 100% TIER1 NO WORRIES GUARANTEE: We stand behind the quality of filtration and overall performance of our Tier1 filters! Reduces static Eases cold and allergy symptoms Soothes sore throat and dry, irritated skin Creates a comfortable living environment Reduces chance of nose bleeds Alleviates snoring for better sleep Algae Bacteria Fungi Mold Spores