Graco Humidifier Replacement Filter for 4.0 Gallon For 4.0 gallon daily output humidifier Fast and easy replacement, drops right into place Fits Graco model 2H02, TrueAir model 05521 Filter for Graco 4.0 Gallon Cool Mist Humidifier Each easy-to-replace drop-in filter can be changed in about a minute. Care & Maintenance Replace filter when it becomes [...]Graco Humidifier Replacement Filter for 4.0 Gallon is a post from: Hunter Humidifier Filter