Effective particle removal: The 2-piece filter is designed to remove unwanted soap and oil before they reach your main filtration system, improving water quality and reducing maintenance. Easy installation and compatibility: With a diameter of 190.5 cm, this filter fits most skimmer baskets for quick, tool-free setup. Low maintenance: Clean weekly; replace the filters every three months based on usage to maintain consistent spa performance. Broad compatibility: This first filter is suitable for spas from manufacturers such as Maax and Cooperage, making it a versatile choice for spa enthusiasts. Use scenarios: - new spa setup: install to protect the main filtration system from soaps and oils on initial fill and startup. - high-use environments: clean weekly and replace every three months to maintain water clarity and filter efficiency. - model compatibility: use as a ready-to-install upgrade for Maax and Cooperage spa models.