Description
Quick answer: This is the genuine ResMed S9 filter cover (part 36859) — the durable snap-on plastic cover that fits the back of all S9 series CPAP/VPAP machines, securing the air filter in place and shielding the filter compartment from dust, debris, pet dander, and accidental liquid spills. It’s a simple, low-cost fix if your original cover is lost or broken — and the filter and cover should always be fitted when using an S9. Easy snap-on, quick to remove for filter changes. No prescription required.
What’s included
- 1 × ResMed S9 filter cover (part 36859)
Air filter and machine not included.
About this part
The filter cover is a small but essential part on the back of the S9 machine — it holds the air filter in place and protects the filter compartment:
- Secures the air filter — keeps the filter firmly seated so it does its job.
- Shields the compartment — a first line of defense against dust, debris, pet dander (hair/dander), and accidental liquid spillage.
- Snap-on, quick-change — easy to remove and refit when you change the filter.
- Ideal replacement — a cheap, easy fix if your original cover is lost or broken (they’re small and easy to misplace during cleaning).
Important: the filter and filter cover should be fitted at all times when using any ResMed S9 machine — running without them compromises filtration and can let debris into the device.
Compatibility
Fits all ResMed S9-series CPAP and VPAP machines. Note: this is for the S9 generation — the S8, AirSense/AirCurve 10, and 11 use different filter covers/compartments.
Key features
- Genuine ResMed S9 filter cover (36859) — snap-on plastic.
- Secures the air filter — keeps it firmly in place.
- Shields against dust, dander, and spills — protects the compartment.
- Quick-change — easy to remove for filter replacement.
- For all S9 CPAP/VPAP machines — a low-cost replacement if lost/broken.
Specifications
| Specification | Detail |
|---|---|
| Product type | Filter cover (machine part) |
| Compatible machines | All ResMed S9-series CPAP/VPAP |
| Function | Secures the air filter; shields the filter compartment |
| Fit | Snap-on (back of machine) |
| Not for | S8, AirSense/AirCurve 10 & 11 (different covers) |
| Included | Filter cover only |
| Not included | Air filter, machine |
| Material | Plastic |
| UPC | 619498368594 |
| Prescription | Not required |
| ResMed reference / SKU | 36859 |
| Brand | ResMed |
Frequently asked questions
What does the filter cover do?
It snaps onto the back of the S9 machine to hold the air filter in place and shield the filter compartment from dust, debris, pet dander, and accidental spills.
Which machines does it fit?
All ResMed S9-series CPAP/VPAP machines. It doesn’t fit the S8 or AirSense/AirCurve 10 & 11 (different designs).
Do I need it?
Yes — the filter and cover should be fitted at all times when using an S9. If yours is lost or broken, this is the replacement.
Does it include a filter?
No — this is the cover only. The air filter is a separate part.
Do I need a prescription?
No — this replacement part does not require a prescription.
Can I get it delivered in Brooklyn or shipped nationwide?
Yes — Stark Medical Supplies offers local pickup and delivery in Brooklyn and across NYC, plus USPS shipping throughout the continental U.S.
Keep the air filter and filter cover fitted at all times when using the S9, per the machine’s user guide.
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