Weber Workshops | WW X Sibarist BIRD Paper FiltersFast filters to fine tune your morning brew. Overview This paper has a very low retention, allowing for fast extraction using a finer grind size and or more coffee without over extraction. Why a paper filter? While the BIRD can brew a great cup of coffee with the stainless filter alone, the use of paper really makes the coffee sing. No grit and all the flavor. About the paper 100% organic FAST Specialty Coffee Filter paper technology. Produced