The AP917HD-S AP904 Water Filter Replacement is a white plastic water filter designed for household use. This 1-stage filter utilizes carbon/charcoal filtration to remove chlorine taste and odor, providing clean and fresh water for your home. With a unit count of 1.0, this filter is compatible with Aqua Optima brands and is suitable for whole house filtration systems. The Elovener brand ensures quality and reliability, making it an essential small kitchen appliance for maintaining a safe and healthy water supply.