BestAir H65, Holmes Replacement, Paper Wick Humidifier Filter, 8.2" x 2.7" x 10" Specifically designed for use with your humidifier Made in the USA Extended life wick filter, fits Holmes models hm-1845, 1850, 1855, 1975, HM2059, hm2060w, 2090, 3000, 3850, hwf-65, 4000 Requires 2 filters, 3800 Requires 3 filters 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