This Grow Insane Screen Filter features a 120 Mesh (only particles smaller than 1/8th of a millimetre can pass through) and can be easily installed into any irrigation systems to prevent particulates from entering and potentially blocking the system components. The screen filter is very easy to maintain, simply unscrew the filter cover and lift out the filter inside. No tools are necessary and the filter body can stay attached to your system while you clean the filter. Chemical and fertiliser resistant.