I couldn't find those specs on the manufacturer's website.
They do say the filter requirements are a minimum of 150 mesh.
I have had good luck with these inexpensive filter screens at 155 mesh. They are easy to disassemble and flush, and then clean the filter if needed.
Dig Filter ScreensI also use the DIG brand flag drippers. They can be twisted apart to be cleaned. I also like running two per tree. If one plugs, it is easy to catch during a visual inspection when the other one is merrily dripping away. (Plus the tree still gets a drink from one dripper when I don't walk my lines often enough.)