The Respironics standard plastic tubing is a lightweight, non-heated, white CPAP tubing. It spans 6 feet in length, with an inner hose diameter of 15mm and 22mm end cuffs, making it suitable for use with all mask types. This CPAP tubing is intentionally designed for compatibility with all DreamStation CPAP and BiLevel machines. Pay by insurance? Please call (877) 799-0202.