OREA FLAT
這些濾紙也稱為 OREA TYPE-G 濾紙，是我們通用的扁平濾紙。它們的過濾速度適中，既不會太快也不會太慢。濾紙一面有紋理，另一面光滑，設計用於實現有效的過濾。為了獲得最佳效果，請將有紋理的一面貼近濾杯，光滑的一面為內部（承載咖啡粉）。使用這種濾紙需要搭配Negotiator，才能將濾紙放入濾杯中，從而實現低旁路沖煮環境。我們大約在四年前發明了這種方法，由於它能以相對簡單的濾紙準備工作沖煮出乾淨、香甜、多汁的咖啡，因此廣受歡迎。
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 |