1 Graco 1.5 Gallon Humidifier Filter, Fits Graco 2H00 & TrueAir 05510, Compare to Part # 2H01, Designed & Engineered by Crucial Air 1 Graco 1.5 gallon humidifier filter Fits Graco Model 2H00 & TrueAir Model 05510 Dimensions: 6.8x4.8x2 in