Compatible Model: This PH01 air filter replacement is compatible with PH04, PH03, PH02, PH01, TP10, HP10, HP09, TP09, HP07, TP07, HP06, TP06. Part Number: 970341-01. Excellent Filtration: The upgraded 2-in-1 filter works with a high-efficiency activated carbon pre-filter to capture up to 99.97% of particles as small as 0.03 microns and helps reduce household odors and airborne gases. Superior Construction: The filter for air purifiers is made of composite filter media and activated carbon, designed with advanced low energy consumption and low density structure technology to ensure high purification efficiency while minimizing airflow resistance. The high-efficiency filter uses upgraded electrostatic electret filtration technology for improved energy efficiency and extended lifespan. 2-in-1 Design: This 360-degree combi filter combines HEPA and carbon filtration into a single unit, designed for easy installation and maintenance. Ideal for use in compatible Pure Cool Hot Humidify fan models. Replacement Part Number: 970341-01.