Welcome to Repl Wick Filters, the perfect replacement wick filters for your Robitussin humidifiers. Our filter is compatible with Part AC-813 & D13-C and provides superior performance compared to other brands. We understand how important it is for you to have a reliable and efficient humidifying system in your home, so we've designed our product with that in mind. Repl Wick Filters are made of high quality materials that provide excellent filtration capabilities while also being easy to clean and maintain. The filter's design ensures optimum air flow through the device, allowing it to efficiently disperse moisture into the room. Plus, its washable construction allows you to easily replace it when needed without having to buy a whole