Greeshow Pre-filter for GS-2811, Black

[Compatibility] Suitable for GS-2811 portable water purifier and outdoor water purifier. [Easy replacement] Simply remove the used filter and replace it with a new one. Cleaning after use is easy, just rinse with water. There is no need to replace the main unit, and it can be used for a long time just by replacing the filter, so it is very economical.