PERSONAL 19mm Diameter CPAP Hose with standard 22mm Rubber End connectors on both ends allows it to fit all CPAP Masks and Sleep Therapy Machines and Pillows. Compatible with Respironics , Resmed , Devilbliss , Fisher&Paykel and all other major CPAP/BIPAP machines Premium Hose is smooth on the inside due to the smooth bore design The flexibility of this tubing allows you easily move around the pillow and bed without causing a mask leak which will ensure proper sleep therapy. Recommended Replacement Schedule: Once every 3 months
