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iRobot `S9-FILTER`

s-series filter geometry differs from e/i/j packs — do not buy j-series filters for an s9 by habit.

Fitment facts

Field	Value
Brand	iRobot
SKU	S9 filter family
Role	Robot vacuum filter
Often confused with	COMBO-J-FILTER, E5-FILTER, EDGE-BRUSH-J, HEPA-EIJ, I7-FILTER
Hard stop	s9 ≠ e/i/j filter trays
Confirm	Model badge (s9 / s9+)
Interval	~2 months typical

s9 ≠ e/i/j filter trays

Derived from this card’s fields — still confirm on the part and OEM docs.

Hard stop: s9 ≠ e/i/j filter trays
Confirm: Model badge (s9 / s9+)
Often confused with: COMBO-J-FILTER, E5-FILTER, EDGE-BRUSH-J, HEPA-EIJ, I7-FILTER
Interval: ~2 months typical
Match bag type letter or robot series letter on the machine.