Filter Humidifier HWF75, HWF72 - Air 3400 Compatible Replacement Holmes Holmes Filter 6-Pack

Replacement Holmes 3400 Humidifier Filter - Quantity, 6 Replaces Holmes HWF75, HWF72 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.