Flow-through water filters in a closed housing

Closed case

— filtration systems in which all components (prefilters, membrane, pump, tubes, sometimes even a tank) are enclosed within a single compact housing. These devices have a monoblock design and are intended for turnkey installation without complex assembly. They are convenient to maintain, aesthetically pleasing, take up minimal space, and often feature automatic flushing or electronic control. Suitable for kitchens with limited space and users who value minimalism and simplicity in module replacement, but they are more expensive and less frequently allow for individual replacement of separate components.