Quick answer: This is the genuine ResMed replacement elbow assembly (part 16399) for the Mirage SoftGel, Mirage Activa LT, Mirage Micro, and Mirage Micro for Kids nasal masks. It includes both the elbow and the swivel, and snaps onto the front of the mask frame — it's where your CPAP tubing connects, and it carries the vents that release exhaled air. Replacing a cracked or worn elbow restores a secure connection and proper venting without buying a new mask.
What's included
Mask frame, cushion, and headgear not included.
About this part
The elbow assembly sits at the front of the mask and does two jobs. First, it's the connection point: the swivel lets your CPAP hose rotate freely as you move, so the tubing doesn't tug at the mask. Second, it handles venting — the elbow has slots and small holes that continuously release exhaled air and CO₂ away from the mask.
Because it's connected, disconnected, and washed every day, the elbow is one of the parts that wears first. A cracked elbow or a worn swivel can cause air leaks at the tubing joint, rattling, or hose drag. This genuine ResMed assembly snaps easily into place on the mask frame and restores both a secure connection and correct venting. Conveniently, one part covers several masks — SoftGel, Activa LT, and Micro share this assembly.
Key features
- Genuine ResMed part (16399) — elbow and swivel included.
- Fits four masks — Mirage SoftGel, Mirage Activa LT, Mirage Micro, Mirage Micro for Kids.
- Swivel connection — hose rotates freely; less mask tug.
- Integrated venting — slots and holes release exhaled air and CO₂.
- Snaps into place — simple, tool-free replacement.
- No prescription required — a straightforward replacement part.
Specifications
| Specification | Detail |
| Product type | Replacement elbow assembly |
| Includes | Elbow + swivel |
| Compatible masks | Mirage SoftGel, Mirage Activa LT, Mirage Micro, Mirage Micro for Kids |
| Function | Tubing connection (swivel) + exhalation venting |
| Connection | Standard CPAP tubing |
| Prescription | Not required |
| ResMed reference / SKU | 16399 |
| Brand | ResMed |
Care notes
Wash the elbow assembly weekly in warm water with a mild detergent, rinse thoroughly, and air dry away from direct sunlight. Never block, tape over, or modify the vent slots or holes — they're what clear exhaled air from the mask. Check that the vents are clear each time you clean, and replace the assembly if it's cracked, discolored, or no longer holds the tubing securely.
Frequently asked questions
What's included? The elbow and the swivel. The mask frame, cushion, and headgear are not included.
Which masks does it fit? The ResMed Mirage SoftGel, Mirage Activa LT, Mirage Micro, and Mirage Micro for Kids nasal masks.
What does the elbow assembly do? It connects your CPAP tubing to the mask via a swivel, and it vents exhaled air through its slots and holes.
When should I replace it? If it's cracked, discolored, rattling, leaking at the tubing connection, or if the vents can't be cleared.
Can I cover the vent holes to make it quieter? No — never block the vents. They're essential for clearing exhaled air. If it seems loud, check that the vents are clean and the part isn't damaged.
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 — Task Supply Corp offers USPS shipping throughout the continental U.S., plus local pickup and delivery in Brooklyn and all five boroughs of New York City.
Use this part with a compatible ResMed mask according to the mask's user guide. Do not block or modify the vents.