Holnunet 4‑Pack Type I Replacement Pool Filter Cartridge – 3-1/8″ x 3-1/2″ – Fits 300–330 GPH Above Ground Pumps – Washable, Reusable High Efficiency Pleated Paper

["🔹 CRYSTAL CLEAR WATER & SUPERIOR FILTRATION – Say goodbye to cloudy pool water and floating debris. Our Type I Pool Filter Cartridge Replacement traps hair, leaves, sand, dust, and fine particles so your family enjoys healthy, sparkling water. No more “dirty water smell” or invisible contaminants – just a safe and refreshing swim every time.","🔹 PERFECT FIT FOR 300–330 GPH PUMPS – Never worry about “wrong size” again. With exact dimensions (3-1/8″ OD x 1-1/8″ ID x 3-1/2″ H) , this reusable pool filter cartridge fits most above ground pool filter pumps (300–330 GPH) perfectly. No tools, no force – just a secure seal from the first try.","🔹 WASHABLE & LONG-LASTING – Tired of washing your filter twice a week? Our heavy‑duty pleated paper + strong inner core withstands high‑pressure water flow and rinses clean in seconds. Replace only every 2 weeks – not every 2 days. Spend weekends with your family, not scrubbing filters.","🔹 ECONOMICAL4‑PACK – Made of premium polyester with well-spaced pleats, debris rinses off effortlessly. Our 4‑pack replacement cartridge keeps your pool ready all season long. Minimize water waste, maximize value – and enjoy peace of mind with every refill.","🔹 DURABLR PERFORMANCE– Reinforced end caps prevent cracking and corrosion for long-term use.Regularly cleaning and reusing the filter cartridge is a simple way to minimize water usage. We recommend replacing the cartridge every 2 weeks to maximize its effectiveness and ensure a clean swimming experience."]