3 ATA Airtight 3 zipper process. This is actually the economy-dimensions chamber from Newtowne Hyperbarics. This chamber is for the best price for the scale for that budget aware customer and is recommended... The OmniPressure Hyperbaric Mattress matches all current brand names and styles of hyperbaric chambers and is https://jamesg135yvh2.wikiannouncement.com/user