Builtin active carbon filter layer provides effective filtration for fridge air, helping to keep the refrigerator environment fresh and reduce odors. Simple installation and maintenance: Before installation, consult the use and maintenance guide. Slide the filter into the housing and press until it locks into place. It is recommended to your water filter every 6 months. Deep multilayer water purification: Water is purified through PP cotton, precompressed activated carbon, RO membrane, and four layers of activated carbon after super stretching. Filtered water may be drunk directly. Strong adsorption and odor removal: Pores are developed with strong adsorption ability, effectively removing residual chlorine and odors from water. Materials and performance: Filtration uses PP cotton, precompressed activated carbon, RO membrane, and four layers of activated carbon to deliver clean water and improved fridge air quality. Use scenarios: In the refrigerator to maintain fresh air and reduce odors around stored foods. In the kitchen to provide drinking water that is filtered and ready to drink directly. In homes that filters on a sixmonth schedule to ensure ongoing filter performance and water quality.