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

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