Hamilton Beach Replacement Filter for TrueAir 05510 Cool Mist Humidifier (5900)<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Simple drop-in design eliminates confusing replacement process</li><li>Blue tint helps hide unsightly mineral stains</li><li>Humidifier Replacement Filter</li><li>Simple drop-in design eliminates confusing replacement process</li><li>Blue tint helps hide unsightly mineral stains</li></ul></div><img src="http://ecx.images-amazon.com/images/I/51YXTIBhwaL.jpg" noproxy>