FINK FESL-323 (Trio): 3-seat hyperbaric chamber
Three seated places for supervised treatment. Medical oxygen by mask at up to 2.0 ATA.
Updated 5 November 2026 · HBO₂ Health
Three seated places for supervised treatment
The FINK FESL-323 (Trio) accommodates up to three people, each breathing medical oxygen through a separate mask. Shared sessions need compatible prescribed pressures.
For a clinic, compare the three-seat capacity with the courses you expect to run and the places likely to be occupied. Include staffing and oxygen supply in the operating budget. Shared sessions can spread operating costs across occupied places, but the seat count alone does not establish the cost per patient session.
Check access for the patients you expect
Patient access deserves its own discussion when the service will see people with limited mobility. Ask FINK to review the proposed seating, transfer arrangements and clearances for those patients before the chair configuration is agreed. A seat count tells you how many seated occupants the chamber accommodates. It does not answer every access question.
The listed sliding doorway is 700 × 1,416 mm. Compare those dimensions with the clinic’s intended way of helping patients enter, sit and leave. Include the trained operator in that planning discussion. FINK’s Trio page lists the manufacturer’s current features and specifications.
Treat floor loading as an early decision
At ~2,900 kg, the Trio needs a checked structural plan. Its vessel measures 3.53 × 2.3 × 2.2 m before working space, service access and supporting equipment are allowed for. Confirm the floor loading and the route into the treatment room before committing to a location. Modular construction does not remove those checks.
Plan cylinder deliveries and reserve arrangements around the proposed three-seat operation, then bring the room, staffing and oxygen plans together before ordering. The clinic planning guide explains how those decisions fit with commissioning, documented maintenance and preparation for the first supervised session.
Specifications
| Seats | 3 |
|---|---|
| External dimensions (W × D × H) | 3.53 × 2.3 × 2.2 m |
| Weight | ~2,900 kg |
- Treatment: 100% medical oxygen by mask, at up to 2.0 ATA
- Chamber rating: 2.8 ATA operating, 3.0 ATA design, to ASME PVHO-1 2023
- Door: sliding, 700 × 1,416 mm
- Safety: fire deluge system, UPS backup power, emergency depressurisation inside and outside
- Oxygen: cylinder manifold with automatic changeover
- Windows: two 695 mm viewports
The chamber is rated above the treatment pressure. That margin is part of the code, not a treatment setting. Your doctor sets the pressure for each session.
Plan the room and oxygen supply
The installation plan needs suitable ventilation and space for the operator, supporting equipment and servicing. Modular sections are assembled in the room, with the actual delivery route checked before ordering.
The cabin is pressurised with air. Medical oxygen reaches each person through a separate mask, supplied by a cylinder manifold with automatic changeover. A trained operator runs every session. The occupant does not self-operate.
Is this FESL model FDA cleared?
Yes. The one- to four-seat FESL chambers (FESL-310, 322, 323 and 324) are supplied under FINK's FDA 510(k) clearance K240569, granted on 21 November 2024, as prescription medical devices for the 13 conditions listed in the clearance. The FDA summary describes FINK's chamber family by compartment rather than by seat count, which is why it mentions capacities of four to 28. We send the clearance letter with every proposal.
What does the project cost?
Most seated FESL projects come in between USD 300,000 and 600,000 installed. Where yours lands depends on the number of seats and the fit-out. The written quote for your site sets the final figure, including delivery, import and any building work.
Request the model price and a quotation for your site. What to include in the quotation.
Planning a Trio installation?
Tell us where the chamber will go and how you plan to use it. We will work through the Trio's room requirements and oxygen supply with you, along with an initial project budget. The final scope and price are confirmed in a written quotation for your site.