4-Pack Replacement Bionaire BWF1500-UC Humidifier Filter - Compatible Bionaire BWF1500-UC Air Filter

Replacement Bionaire BWF1500-UC Humidifier Filter - Quantity, 4 Replaces Bionaire BWF1500-UC Air Filter Traps Water 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.