Hot Tub Filters for PWW50P3, PWW50, 6CH-940, FC-0359, 817-0050, 25252, 378902, 03FIL1400, 60401, 8550 etc. Specification: Material: PP polyester fiber cloth Filtration area: 50 sqm. Ft filter area Height: 243mm / 9.5in (with thread and handle) Diameter: Φ 150mm / 5.9in Thread: Φ 45 mm / 1.7 inch (Coarse thread) Top: Top cover with handle Bottom: Filter bottom cap with screw thread Package includes: 2 x SPA Filter Durable and washable filter with filter life of up to 12-24 months/ replace as needed. Strong inner core with chlorine resistant, high pressure resistance anti-microbial end caps. Filter cartridge are made with a combined density micromembrane fabric to a large filtration surface area and dirt-holding capacity while still allowing good drainage. Please check that your existing filter part number or dimensions match this filter to confirm compatibility. Fits the following spa brands: Aegean Spas Alps Spas Artesian Spas Barrier Reef Spas Caldera Spas Canadian Spas Catalina Spas