go to your local headshop (glass pipe store) and ask them for some pipe screens, and cut to fit. works great. casue when i got one. i noticed that there wasn't anything that could filter the dirt, and i was like "damn." i might as well not run a filter if there is nothing to catch the dirt/debre. pipe screen works good. if you need a couple pm me your address and i'll send you a few. if anyone needs a few pm me i have planty in silver and gold color. i think the silver are steel and the gold are brass. shouldnt matter though.