HQRP® Humidifier Wick Filter Replacement for Essick Air / Bemis 1043 ; Dimensions: 12" x 10.5" x 4"; Compatible with Essick Air, AIRCARE, and Bemis Humidifiers; Compatible with Essick Air / AIRCARE, and Bemis 821-000, 821-001, 826-000, 826-600, 826-800, 826-900, 831-000, SS390DWHT, 8266, 8268 and all other Space Saver 800 8000 series Evaporative Console Humidifiers; Compatible with Essick Air AIRCARE EP9 EP9R Series Humidifiers; Traps particulates and mineral deposits; Does not include frame; HQRP Humidifier Wick Filter is designed with aluminium-reinforced multi-cell material that retains shape for reliable performance; HQRP 1043 humidifier wick filters will help your humidifier quickly restore indoor humidity and resolve a range of symptoms caused by low humidity: - Prevent or relieve dry skin, help reduce nasal swelling and make it easier for you to breathe; - Help reduce static electricity and avoid annoying electric shocks when walking through carpets; - Help keep the things you own in good condition to avoid squeaking your wood floors, etc.; For best results, please fill the humidifier tank with distilled water; Excessive use of hard water will degrade filters and cause them to turn yellow prematurely; We recommend you to replace the humidifier filter every 1-2 months, or at least once per season.