Think Crucial 4 Replacements for Robitussin Humidifier Wick Filter, Compatible With Part # AC-813, AC813, AC 813, D13-C, D13C, D13 C HIGH QUALITY AIR FILTER that can replace your Robitussin Humidifier Filter. Get back to breathing clean air again! HEALTHIER LIFESTYLE! No one wants to breathe in dirty air and if you don't clean your air filter that will be exactly what you'll be doing! Replacing your filter will help clean your air and allow for a healthier lifestyle! This filter fits Robitussin Models: DH832, RCM832, RCM833, WF813, AGW813, DH830, DH-832, RCM-832, RCM-833, WF-813, AGW-813, DH-830, Sesame Street SH100, & SH200. EASY TO INSTALL so you can get back to breathing clean air as soon as possible! Simply remove your old filter and put this brand new one in it's place! This filter is comparable to part # AC-813, AC813, AC 813, D13-C, D13C, D13 C. SAVE MONEY by using a new air filter! When your Robitussin Humidifier has a clogged or dirty air filter it can cause it to work harder which will end up hurting your electric bill! this filter is approximately 3-3/4" x 6" x 1-1/2" inches. GUARANTEED SATISFACTION because of a 30 day full money bank guarantee and a trusted Think Crucial warranty. We are so confident in our products that we have no problem giving you every penny back if you're unhappy with your purchase. You won't see promises like that from big box brands!