【Compatible with】Perfectly compatible with Cusinart CAP-500FPK Purifier. 【3-in-1 Filtration System】It including a fine primary filter, H13 true HP filter and high efficiency activated carbon filter. 【Easy to install】--Easy to replace and disposable, no tools required. Simply remove and replace from your machine unit when needed. 【Activated Carbon Filter】 Highly effective activated carbon can help reduce indoor odors from smoke, cooking and pet odors. 【Life Time】 We recommend replacing the filter every 6-8 months, depending on usage. cap500 Replacement Filter