OREA FLAT
Also known as the OREA Type-G filter, these are our universal flat filters. They offer a medium flow rate—neither too fast nor too slow. Designed for effective filtration, the paper features a textured side and a smooth side. For best results, place the textured side against the dripper and the smooth side facing inward (to hold the coffee grounds). To use these filters, you must pair them with the Negotiator to mold the paper into the dripper, creating a low-bypass brewing environment. We invented this method about four years ago, and it has gained widespread popularity for producing clean, sweet, and juicy coffee with relatively simple filter preparation.
FILTER SIZING CHART
| Filter name |
Compatible brewers |
| OREA O1 Flat filter (also known as Type G) / equivalent to 155 size | V2, V3 small/155, O1 |
| OREA O1 Wave filter / equivalent to 155 size | V2, V3 small/155, O1 |
| Sibarist Fast Flat O1 | V2, V3 small/155, O1 |
| OREA V4 Flat Filter (also known as Type G) / equivalent to 185 size | V4 Narrow, V4 Wide, V3 Large/185 |
| OREA V4 Wave Filter / equivalent to 185 size | V4 Narrow, V4 Wide, V3 Large/185 |
| Sibarist Flat V4 Narrow / equivalent to 185 | V4 Narrow, V3 Large/185 |
| Sibarist Cone V4 Wide / equivalent to cone size 2 | V4 Wide with APEX base |
| Big Boy Wave Filter / unique to Big Boy Brewer | Big Boy Brewer |
| Z1 Filter x Sibarist | Z1 Brewer |