Reduce Chemicals Usage: This is a highly effective cartridge for Dimension One spas to purify spa water. Mineral purification is a natural process that effectively and consistently improves water quality without the overuse of excessive hot tub chemicals. It helps maintain a balanced chemical environment and can be used with a hot tub ozone system for a more comfortable spa experience.Perfect for Dimension One Spas: This vision cartridge is designed specifically for the Vision cleaning system in Dimension One spas. It utilizes the water flowing through the D1 water management system to reduce chlorine odor, keep the spa clean, and provide crystal clear, odor-free water for an enjoyable bathing experience.Lasts Up to 6 Months: This cartridge lasts up to 6 months. Use the Date Ring to track when replacement is needed. With minimal maintenance required, it helps keep spa water clean and clear for an extended period.Natural & Safe Material: This hot tub filter shell is made of high-quality ABS material, ensuring durability and safety.Reduce Skin Irritation: The replacement cartridge continuously improves water quality as water circulates through the filtration system. The mineral-based purification is gentle on the skin, offering a soothing and comfortable experience similar to that of a natural spa.Color: Purple Material: ABS Package Contents: 2 x Dimension One Spa Filters Note: The package includes only the items listed above. Other products are not included. Due to light reflection and differences in display screens, the color of the item in the image may vary slightly from the actual product. Measurement may vary by +/- 1-3 cm.