Inogen One G4 Particle Filter

Genuine RP-405 particle filter for the Inogen One G4 — a washable mesh that guards the air intake.

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Genuine RP-405 particle filter for the Inogen One G4
Washable and reusable — mild soap, air-dry fully
Traps dust, pet hair, and airborne particles
Press-fit over the air-intake screen; no tools
Replace only when misshapen or the mesh is damaged
Free shipping on orders $99+

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Inogen’s US dealer policy does not allow authorized dealers to publish prices for new equipment or to complete the purchase online. That is why you see “Check price” instead of a number — it is not a site error.

To get your price, call (786) 755-8063, message us on WhatsApp, or use the chat. We’ll send you a formal quote or an invoice by email, and we ship nationwide from Miami.

Genuine RP-405 particle filter for the Inogen One G4
Washable and reusable — mild soap, air-dry fully
Traps dust, pet hair, and airborne particles
Press-fit over the air-intake screen; no tools
Replace only when misshapen or the mesh is damaged
Free shipping on orders $99+

Genuine productFree shipping on orders $99+Ships from Miami, FLExpert help · (786) 755-8063

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Brand: Inogen
SKU: RP-405
Category: Filters

Description
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In short

Wash it, dry it, reuse it

The RP-405 is the genuine external particle filter for the Inogen One G4. It is a washable, reusable mesh over the air-intake screen — wash it weekly and replace it only when it loses shape or the mesh is damaged. G4-only. This is not the internal intake assembly or the output filter.

This reusable mesh sits over the G4's intake screen and catches everyday debris. A weekly rinse keeps airflow smooth and helps protect the internal components.

✅ Inogen One G4 ❌ Not for the G3, G5, or Rove 6

Shop the compatible concentrator: Inogen One G4

Washable and reusable

Rinse with mild soap and air-dry fully — reuse instead of replacing every month.

Protects internal parts

Catches dust and pet hair before it reaches the compressor and sieve beds.

Genuine Inogen part

Fits the G4 intake screen exactly for a clean, secure seat.

Details

What's included

One genuine Inogen One G4 particle filter (RP-405) and a care and install card.

Why genuine matters

The genuine RP-405 is shaped to press-fit over the G4 screen without gaps. A poorly-fitting mesh can let debris slip past or fall off during use.

Frequently asked questions

Is this the external filter or the internal one?

This is the external, washable particle filter that sits over the intake screen. The internal, non-washable intake assembly (SP-704) is a separate part. Many G4 owners use both.

How do I clean it?

Hand-wash with mild soap and warm water, then air-dry completely before reinstalling. Do not wring, bleach, or tumble-dry.

When should I replace it instead of washing it?

Replace it when it becomes misshapen, torn, or the mesh is damaged. Under typical use that is often around every 6 months.

Does it fit the G5 or Rove 6?

No. The RP-405 is for the G4 only. The G5, Rove 6, G3, and other brands use different filters.