Product Description 2-pack of filter cartridges for Pleatco PWW50 Unicel 6CH-940 hot tubs and spas 2-pack of spa filter cartridges for Pleatco PWW50 hot tub filters, replacement cartridges for Unicel 6CH-940/hot tubs, spas, and commercial whirlpools Swimming Pool Filter: Made of 100% polyester fiber, with stronger dust collection capacity, suitable for replacement cartridges in swimming pool and spa cleaning systems. Product Dimensions: Swimming Pool Filter Diameter: 150 mm/5.9 inches; Height: 241 mm/9.5 inches; Thread: 46.5 mm/1.8 inches Product Features: The pool filter features a foldable design, increasing the filtration area, low pressure drop, high flow rate, long service life, easy cleaning, and cost savings. Product Compatibility: This pool filter is compatible with most indoor and outdoor above-ground swimming pools, indoor and outdoor hot tubs, and hot tubs. The Perfect Choice: A pool filter is essential for maintaining the optimal performance of Lay-Z-Spa spa pools. Simply connect it to your spa pool, and it will filter out dirt and impurities from the water, keeping it clean and healthy.