Vornado MD1-0001， MD1-0002， MD1-1002 Humidifier Wick Filter. Designed by FilterBuy to fit all Vornado Evaporative Humidifiers. Pack of 4 Filters.<div style="text-align: left;"><strong>[Product Information]</strong><ul><li id="replacementPartsFitmentBullet" class="aok-hidden" data-doesntfitmessage="We're not sure this item fits your " data-fitsmessage="This fits your "><span class="a-list-item"><span id="replacementPartsFitmentBulletInner"><a href="#" class="a-link-normal hsx-rpp-fitment-focus">Enter your model number</a>to make sure this fits.</span></span></li><li><span class="a-list-item"> Pack of 4 Vornado MD1-0001， MD1-0002， MD1-1002 Humidifier Wick Filters </span></li><li><span class="a-list-item"> Designed by FilterBuy to fit all Vornado Evaporative humidifiers </span></li><li><span class="a-list-item"> Including the following Vornado models: 221， 232， 421， 432 and HU1-0021 </span></li><li><span class="a-list-item"> Premium humidifier wick filter designed by FilterBuy to reduce pollutants. Replace at least once per season. </span></li><li><span class="a-list-item"> Humidifier FilterBuy: Breathe Better! </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/51sxwaDN5qL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51%2BT0kR8c3L.jpg" noproxy>