Chamber Comparison
O2Seven O2SevenvsSechrist Industries Legacy Series (3200/3300HR/3600HR)
O2Seven
O2Seven
1.5
ATA
—
Starting
—
Warranty
Sechrist Industries
Legacy Series (3200/3300HR/3600HR)
3
ATA
$30K
Starting
1yr
Warranty
The Bottom Line
The Sechrist Industries Legacy Series (3200/3300HR/3600HR) has clear advantages in max pressure, fda clearance, and clinical credibility. However, both chambers sit in the Clinical Grade tier, so consider your specific requirements before deciding.
Key Differences
O2Seven
1.5 ATA
Sechrist Industries
3 ATA
Higher pressure enables more clinical protocols. The Sechrist Industries Legacy Series (3200/3300HR/3600HR) reaches 3 ATA, which supports FDA-approved treatment protocols.
O2Seven
Not FDA Cleared
Sechrist Industries
FDA Cleared
FDA clearance matters if you need insurance reimbursement, plan to operate a clinical facility, or want the highest safety assurance. For home wellness use, it's less critical.
O2Seven
3/10
Sechrist Industries
9/10
This score reflects published studies, certifications, and clinical adoption. Higher scores indicate stronger evidence backing the manufacturer's claims.
Who Should Buy Which?
Best for
Sechrist Industries Legacy Series (3200/3300HR/3600HR)
Budget-conscious clinics, refurbished market buyers, proven reliability
View full details →Full Specification Comparison
| Specification | O2Seven O2Seven | Sechrist Industries Legacy Series (3200/3300HR/3600HR) |
|---|---|---|
| Chamber Type | Hard-Shell Monoplace | Hard-Shell Monoplace |
| Performance Tier | Clinical Grade | Clinical Grade |
| Max Pressure | 1.5 ATA | 3 ATA★ |
| Oxygen Delivery | mask/cannula | 100%-medical-grade |
| O₂ Concentration | Up to 95% | 100% oxygen environment (entire chamber pressurized with O2) |
| Capacity | 1-person | 1-person |
| Weight | — | 2,360 lbs |
| Interior Dimensions | — | Various (33-36in diameter) |
| Portability | fixed-installation | fixed-installation |
| FDA Cleared | No | Yes (#K140559)★ |
| CE Marked | No | Yes★ |
| Made In | Japan | United States |
| Price | Contact manufacturer | $30,000 - $60,000 (refurbished) |
| Warranty | — | 1 year |
| Clinical Score | 3/10 | 9/10★ |
| Brand Established | — | 1973 |
| Climate Control | No | Yes★ |
| Communication System | No | Yes★ |
| Emergency Features | — | Emergency vent system, fire suppression, safety interlocks |
O2Seven O2Seven — Standout Features
Sechrist Industries Legacy Series (3200/3300HR/3600HR) — Standout Features
Interested in either chamber?
Request quotes from both manufacturers and compare real pricing.
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