This genuine Arctic Spa progressive pre-filter provides a fine first stage of filtration to protect the main cartridge and equipment. The nonwoven media captures dirt and debris at a 5 micron rating to improve water clarity and extend the life of the primary filter. Compatibility and fitment Designed for Arctic Custom Series hot tubs and swim spas manufactured from 2020 to present. Confirm compatibility with your model using the part number PRT-900110 before purchase. Key features Fine 5 micron filtration for improved water clarity Easy install and remove design for quick maintenance Protects the progressive and primary filter media and plumbing Genuine Arctic Spa replacement part for reliable fit and performance Installation and care Slide the pre-filter onto the top of the progressive filter element until it seats. Inspect at regular intervals and replace when visibly dirty or if water flow is reduced. Rinse with fresh water to remove loose debris. Replace the part when cleaning no longer restores proper flow. What is included One progressive pre-filter element. Check your order quantity for multiple pack options if needed. Replacement interval Replacement frequency depends on usage and water conditions. Inspect monthly under normal use and replace as needed. Replace more frequently in heavy use or high debris environments. Notes For best results use genuine replacement parts from the original equipment manufacturer. If you are unsure about fitment provide your spa model and serial number to customer service for confirmation.