efp humidifier filters for vornado md1-0001, md1-0002, evap1, evap 2, evap3, hwf55, hwf-55 model humidifiers replacement wicking filters | includes 12 aftermarket filters efp <b>efp replacement humidifier wicking filter compatible with vornado md1-0001, md1-0002, evap1, evap 2, evap3, hwf55, hwf-55 model humidifiers | includes 12 high quality, aftermarket filter</b><br><br>twelve pack: includes 12 high quality replacement efp humidifier wick filter for vornado md1-0001, md1-0002, evap1, evap 2, evap3, hwf55, hwf-55 model humidifiers. approximate measurements: 8-15/16" l x 7" w x 1-11/16" t. replacing your humidifier filter regularly ensures that harmful particles are removed from the water before it is released into the air. efp high output interwoven filter designs help trap and retain mineral deposits for natural and clean humidification - no white dust. efp provides high quality replacement parts that are a guaranteed exact fit and affordably priced compared to the much higher priced, similar quality oem product. this is a high quality efp brand replacement part. ~quality, fit, and workmanship are fully guaranteed. we offer a no-hassle 30 -day money back guarantee on all efp products so you can be confident in your purchase decision.<br><br><b>why should you replace your humidifier filter?</b><br><br>a humidifier is an essential household appliance, particularly for the winter months when the air becomes a lot drier and less humid. your humidifier helps by dispersing water vapor into the air to replace the lost moisture. most humidifiers contain filters, which help to keep the moist air clear of any impurities. they remove particles from the water before it is dispensed into the air. you need to change your filters regularly, so you can continue to enjoy healthy air and keep your humidifier in good condition. the frequency of changing depends on the quality of your household water supply and how often you are using the humidifier. there are many different types of humidifier filters. check your user manual or the manufacturers website to make sure you know what type you need to buy.