6-Pack Replacement White Westinghouse WWHM1750ZE Humidifier Filter - matching White Westinghouse WWH640 Air Filter

Essential for Allergy Sufferers.. Replacement White Westinghouse WWHM1750ZE Humidifier Filter - Quantity, 6 Replaces White Westinghouse WWH640 Air Filter Traps liquid Impurities & Dissolved Solids Before They Become Airborne For best results, change air filter at least once per season or more often depending on air superior and use