Genuine Aprilaire replacement parts made by Aprilaire in Wisconsin</br>Fits Aprilaire humidifiers 600?? 600a?? 600M?? 700?? 700a?? 700M?? 760?? 768?? 350?? 360?? 560 and 568</br>Filter life 1 year</br></br>Product Description</br></br>Genuine aprilaire replacement parts made by aprilaire. Made specifically for aprilaire humidifier for best fit and performance.</br><br/>http://www.amazon.com/gp/product/B01E5L0J46