Our largest and most versatile chamber as physicians and patients have the capability to treat up to 3.0 ATA (29 psi) operating pressure. This chamber boasts a considerable 42" diametric interior, yet is designed to fit in most offices and clinics. With mirrored controls inside and out the Fortius420® offers remarkably safe functionality at a wide range of protocols. Additionally, this chamber can deliver 100% oxygen at up to 3.0 ATA through a hood assembly system to remain cost effective for physicians and safe for patients. Able to be shipped and installed in less than 10 business days, this ground-breaking design and medical grade technology ensures durability and functionality that will last for years.