Does not fit
Does 800/900 Series AeroForce filter fit Roomba s9?
Part and OEM SKU
800/900 Series AeroForce filter · type filter · SKU 4636433 · codes 4636433
Verdict
Does not fit for Roomba s9 (s9).
Why it does not fit
Official 4636433 is 800/900 AeroForce only, not s Series.
Official evidence
Manufacturer page used for this row. Last checked 2026-09-02. Amazon titles are not evidence.
Compatible models on this part
Does not fit / excluded in this catalog
Regions
US, CA, UK, AU. Same series name, same verdict, unless the carton prints another SKU.
Identify the vacuum
Use the printed series, not the box nickname. Flip the robot or open the app device page and match Roomba s9.
Replacement steps
- Open the dustbin or filter door printed in the manual.
- Pull the frame straight out. Do not pry on the seal.
- Seat the replacement until the latch is flat. A wet filter can throw a suction error.
Common mistakes
- Using an S7/S8 pack in a previous-generation S5/S6 body.
- Treating a wet washable filter as a fit problem.
- Trusting an Amazon “fits 40 models” title.
Retailers
Fit is written before any retailer link. Compare the official shop SKU with the listing number before you pay.
FAQ
Does 800/900 Series AeroForce filter fit Roomba s9?
Does not fit. Official 4636433 is 800/900 AeroForce only, not s Series.
What is the OEM number?
Catalog SKU 4636433. Barcodes on file: 4636433.
Is an Amazon title enough?
No. Confirmed requires the official page named in the source link.
Does the region change the fit?
US / CA / UK / AU keep the same row unless the box prints a different SKU. This model row: US, CA, UK, AU.
How do I know I have this robot?
Read the nameplate or app device page. Copy the exact series string.
What if the barcode does not match?
Treat it as Unverified and use the model hub instead of the listing title.