Product review (4 stars): humidifier filter
We had difficulty finding new filters for our home humidifier, so we ordered from Amazon.  They work perfectly and are the original type, a Holmes UH311 replacement filter.<a data-hook="product-link-linked" class="a-link-normal" href="/Holmes-UH311-Replacement-Filter/dp/B0000DK357/ref=cm_cr_arp_d_rvw_txt?ie=UTF8">Holmes UH311 Replacement Filter</a>