Medical equipment for the screening, diagnosis and treatment of sleep disordered breathing, namely, respiratory nasal masks, respiratory nose and mouth masks, respiratory full face masks, nasal prongs, nasal pillows, mechanical ventilators, CPAP, namely, continuous positive airway pressure flow generators, bilevel flow generators, automatically titrating CPAP, namely, continuous positive airway pressure flow generators, adaptive servo ventilators, humidifiers, polysomnography equipment and parts and accessories therefor