BestAir L15, Lasko Replacement, Paper Wick Humidifier Filter, 15" x 1.9" x 12.1" Replacement carbon prefilter, fits lasko L15 1000, 1150 & 1155, thf-15 style humidifiers Adds extra shine to your product Proudly made in the USA Antimicrobial Wick Filter Traps impurities in the water Up to 150% stronger Aluminum reinforcement