Filter Height: 8.27in (21cm), Width: 7.87in (20cm). Note: Do not fit for 311 Auto,411,411i Max, 211i Max, 311i Max, 311i+Max. ONLY compatible for Blueair Blue Pure 511.
Blue Pure 511 Replacement Filter for Blue Air Pure 511 Air Purifier True HEPA...
2-Pack 511 Replacement , Compatible with Air Pure 511 , True H13 HEPA9340
Blue Pure 511 Replacement Filter for Blue air Pure 511 Air Purifier True HEPA &
