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When your mask starts to hiss or leave marks, your sleep suffers. Restore a secure, comfortable seal with the ResMed Full Face Cushion for the Mirage Quattro FX, a single replacement cushion sized to fit your existing Quattro FX frame.
The dual-wall design pairs a supportive inner layer with a soft outer membrane that inflates and gently rolls around the nose as air flows. This Spring Air approach helps reduce the likelihood of leaks and pressure sores while maintaining stability through position changes. The inner support prevents cushion collapse under pressure, while the outer membrane cushions contact points for a balanced distribution of pressure.
Made from medical-grade silicone elastomer with no latex, PVC, or DEHP, this cushion is designed for the forehead-free architecture of the Quattro FX, sealing perfectly without a traditional forehead bracket. The cushion is designed to sit mid-bridge for optimal positioning.
Available in Small, Medium, and Large. The Quattro FX requires your cushion size to match your spring frame size exactly, as sizes are not interchangeable across frames. The size is embossed on the flat bottom silicone flap to the right of the mask name. The Quattro FX for Her is available in Small and Medium.
Important: This cushion fits the Quattro FX only. It is not compatible with the original Mirage Quattro, Quattro Air, or any AirFit-series masks. Quattro vs. Quattro FX frames, cushion clips, and cushions are not interchangeable.
Dual-Wall Spring Air Technology — A supportive inner wall prevents cushion collapse while a soft outer membrane inflates and gently rolls around the nose, distributing pressure evenly for fewer leaks and hot spots.
Forehead-Free Seal — Engineered to seal perfectly without a traditional forehead bracket, reducing contact points on the upper face and eliminating nasal bridge pinch marks for an unobstructed field of vision.
Medical-Grade Silicone — Made from silicone elastomer with no latex, PVC, or DEHP for safe, comfortable all-night contact against the skin.
Size-Matched Precision — Available in Small, Medium, and Large to match your specific Quattro FX frame. Size embossed on the cushion flap for easy identification.
Genuine ResMed Quality — Factory-manufactured replacement cushion that lets you refresh your trusted Quattro FX mask without replacing the entire system.
| Specification | Detail |
|---|---|
| Manufacturer | ResMed |
| Part Numbers | 61721 (Small), 61722 (Medium), 61723 (Large) |
| Material | Silicone Elastomer (no latex, PVC, or DEHP) |
| Dead Space (Large cushion) | 243 mL |
| Therapy Pressure Range | 4 to 30 cmH₂O |
| Sound Power Level | 27 dBA (±3 dBA) |
| Sound Pressure Level (1 m) | 19 dBA (±3 dBA) |
| Dimensions (Small) | 4.76″ (H) x 6.93″ (W) x 5.67″ (D) |
| Dimensions (Medium) | 5.12″ (H) x 6.93″ (W) x 5.67″ (D) |
| Dimensions (Large) | 5.51″ (H) x 6.93″ (W) x 5.67″ (D) |
| Mask Weight (Small) | 101.1 g |
| Mask Weight (Medium) | 106.4 g |
| Mask Weight (Large) | 110.7 g |
| Product Life | 3–6 months |
| FSA/HSA Eligible | Yes |
| Tax Category | CPAP Replacement Supplies |
| Billing Code | A7031 (Full Face Cushion) |
Compatible Masks:
Not Compatible With:
Critical Sizing Note:
Unlike modern masks with universal frames, the Quattro FX requires your cushion size to match your spring frame size exactly. Sizes are not interchangeable across frames:
The size is embossed on the flat bottom silicone flap, to the right of the mask name. If unsure, check your frame before ordering.
Cleaning:
What to Avoid:
When to Replace:
Fitting Tip: The cushion membrane is designed to inflate against your face to provide a comfortable seal with low headgear tension. Do not overtighten. Adjust straps evenly and ensure the cushion is not crushed or creased.
Over time, silicone degrades from facial oils and cleaning. A fresh Dual-Wall Spring Air cushion restores the stable, even-pressure seal that prevents leaks and pressure sores without overtightening.
The dual-wall construction inflates the outer membrane around your nose rather than stretching over it, creating a suspension-like fit that absorbs movement and distributes pressure evenly across the face.
A simple cushion swap refreshes your Quattro FX’s performance without buying a completely new mask. Match your frame size, press the cushion into place, and enjoy like-new therapy comfort.
This cushion is designed for the ResMed Mirage Quattro FX and Quattro FX for Her Full Face CPAP Masks only. It is not compatible with the original Mirage Quattro, Quattro Air, AirFit series, or any other mask.
The cushion is available in Small, Medium, and Large. Your cushion size must match your Quattro FX spring frame size exactly, as sizes are not interchangeable across frames.
The size is embossed on the flat bottom silicone flap of your current cushion, to the right of the mask name. Look for S (Small), M (Medium), or L (Large).
Spring Air is ResMed’s cushion technology that uses two walls: a supportive inner layer that prevents collapse and a soft outer membrane that inflates and gently rolls around the nose as air flows. This distributes pressure evenly and helps maintain a stable seal through position changes.
Yes. The cushion is made from silicone elastomer and does not contain latex, PVC, or DEHP materials.
Replace the Quattro FX cushion every 3 to 6 months. Replace sooner if the silicone becomes tacky, yellowed, cracked, or if leaks persist despite proper headgear adjustment.
No. The Quattro and Quattro FX are different mask systems. Their frames, cushion clips, and cushions are not interchangeable.
Yes. The Full Face Cushion for Quattro FX is eligible for purchase using Flexible Spending Account (FSA) or Health Savings Account (HSA) funds.
The Quattro FX mask system supports therapy pressures from 4 to 30 cmH₂O.
The ResMed part numbers are: 61721 (Small), 61722 (Medium), and 61723 (Large).
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