The SoClean is an automated CPAP equipment cleaner and sanitizer. The SoClean sanitizes and disinfects your CPAP accessories such as your mask, hose, and water reservoir (including the water inside) without needing to take any pieces apart. Full and complete sanitizing is accomplished without any messy chemicals or even the use of water. Your equipment remains completely dry. The SoClean CPAP sanitizing machine uses safe, natural, activated oxygen to thoroughly sanitize your entire CPAP system by eliminating any mold, bacteria, and viruses it comes in contact with. The inside chamber was designed specifically so that multiple mask types can be used within the SoClean unit, from nasal pillow masks to full CPAP masks. The inside chamber dimensions are 5.5 inches length x 5.5 inches width x 7.25 inches. Most full face masks will fit inside the chamber with the exception of a total face mask that covers the entire face.