Overview The Newtowne C4-27 is the entry-level model in the Newtowne C4 Series — a 27-inch diameter soft-shell hyperbaric chamber that delivers 1.3 ATA hyperbaric oxygen therapy in the most compact and affordable format Newtowne makes. Built in the USA, the C4-27 is the right choice for first-time HBOT buyers who want American manufacturing quality and Newtowne’s proven reliability at the most accessible price point in the lineup. Key Specifications Specification Detail Brand Newtowne Hyperbarics Model C4-27 Diameter 27 inches (69cm) Pressure 1.3 ATA Origin Made in USA Shell Type Soft shell — cylindrical Ideal For First-time HBOT buyers, smaller individuals, budget-conscious home users Use Cases Ideal for first-time HBOT buyers who want to start with an American-made chamber at the most accessible price point. Ideal for smaller individuals (under 5’8”) who find the 27” diameter comfortable for daily sessions. Ideal for home users with limited space who need the smallest possible footprint for a cylindrical HBOT chamber. Ideal for daily wellness HBOT protocols at 1.3 ATA for recovery, anti-aging, cognitive support, and inflammation reduction. Ideal as a starting point for users who plan to upgrade to a larger C4 model as their HBOT practice grows. How It Compares The C4-27 is the most compact and affordable model in the Newtowne C4 Series — 27 inches vs. 34” (C4-34) and 40” (C4-40). For smaller individuals and first-time buyers, the C4-27 delivers the same 1.3 ATA Newtowne quality at the lowest entry price. For buyers who need more space, the C4-34 or C4-40 are the natural upgrades within the same American-made lineup. Features 27-inch (69cm) diameter — most compact C4 Series model Made in USA — Newtowne’s American manufacturing quality 1.3 ATA operating pressure — wellness HBOT protocol range Soft shell cylindrical construction — portable and storable Most affordable Newtowne home HBOT chamber Ideal entry point into American-made hyperbaric therapy