Summit To Sea The Grand Dive 40" Hyperbaric Chamber

The Summit To Sea Grand Dive is one of the largest mild hyperbaric chambers available — 40 inches in diameter and 90 inches long, with enough interior space for 2–3 people or light exercise during sessions. Dual redundant compressors safely reach 4.4 PSI. Two clear viewing windows and two auxiliary valves. Double-sided full-length zippers open from inside or outside. Patented sound suppression and in-line air filtration keep operation quiet and clean. Foam bolsters, foam mat, support frame, and carrying case included. Weighs approximately 50 lbs. Made in the USA by Summit To Sea.

• 40" diameter, 90" length — fits 2–3 people — one of the largest mild hyperbaric chambers available; room for light exercise or a companion during sessions.
• 4.4 PSI maximum pressure — dual redundant high-efficiency electric compressors with double vent system for safe, controlled pressurization.
• Two clear viewing windows — brighter, more open interior experience; reduces claustrophobia.
• Two auxiliary valves — added control and safety during pressurization.
• Double-sided full-length zippers — operable from inside or outside; easy entry and exit.
• Patented sound suppression + in-line air filtration — quieter operation and cleaner airflow during sessions.
• ~50 lbs with carrying case — large chamber that remains portable for storage or relocation.

What's Included

• Chamber with carry bag and two cradles
• Foam Mat
• Frame
• 2 Compressors
• In the OPEN ME FIRST BOX:
  • Silicone and Zipper cleaner
  • Auxiliary Valve
  • Thumb drive with setup instructions
  • Failed Circuit Alarm (battery included)
  • Screwdriver

Specifications

Before You Buy — What You Should Know

Shipping: Ships free to the contiguous United States. Contact our team for estimated delivery timelines before ordering.

Setup: Requires assembly of the external frame and compressor connections. Setup instructions included on thumb drive.

Medical disclaimer: Hyperbaric oxygen therapy at mild pressure (1.3 ATA) is a wellness modality. Consult your physician before use, especially if you have any medical conditions.

Who It's For: Users who want maximum interior space in a horizontal chamber — families, athletes, or anyone who wants room to move or share sessions. The 40" diameter is the largest horizontal model in the Summit To Sea lineup. For a vertical sit-upright option at the same diameter, see the Dive Vertical. For the largest chamber overall, see the Grand Dive Pro 46" or Grand Dive Pro Plus 60".

Support: Our team can help with model selection, setup questions, and session guidance. We've done the research. You make the decision.

Resources

• Instruction Manual

You May Also Like

• Summit To Sea The Dive 33" — the most popular mid-size model; 33" diameter for solo sessions.
• Summit To Sea Grand Dive Pro 46" — step up to 46" diameter with stretcher-accessible entry and furniture-grade PVC frame.
• Summit To Sea Dive Vertical 40" — same 40" diameter in a vertical sit-upright design.