The Intex Tri-Pack Swimming Pool Type A or C Filter Cartridges are high-quality filter cartridges designed for above ground pools. Made by the trusted brand Intex in the United States, these cartridges are suitable for both Type A and Type C filters. The pack includes three brand new and sealed cartridges, ensuring a clean and clear pool or spa for your enjoyment. With the model number 29003E, these filter cartridges are a practical and efficient solution for maintaining the water quality in your outdoor swimming pool.