Material & dimensions: spa filter cartridge for infinite/ spa, spare filter for hot pool spa, PET + nonwoven fabric. Dimensions: 100 mm - hole diameter: 60 mm - height: 75 mm. Weight: 135 g. Large filtration area: the pleated structure offers a larger surface area and makes the filter cartridge more efficient. High quality: made of high tensile strength ABS material. The filter media, the central stem and the cap are glued together to ensure a better tightness of the cap. Convenient replacement: easy installation, no tools needed. The opening has thread, it is easy to unscrew and replace the filters. The filter is flexible and convenient. Easy to adjust and clean. Please replace it every 2 weeks for best results. Infinite screw-on Spa filter: keep your Spa perfectly clean and healthy with official filter cartridges that filter out dirt and impurities from the water.