A BiPAP full face mask – M size (Deckmount) is a specialized respiratory device used in bilevel positive airway pressure (BiPAP) therapy for patients with sleep apnea, COPD, or other breathing disorders. The medium-sized mask covers both the nose and mouth, ensuring effective delivery of pressurized air at two levels – higher pressure during inhalation and lower pressure during exhalation – to support easier and more natural breathing. Its deckmount design allows stable attachment and positioning, reducing air leaks and enhancing therapy efficiency. Made from soft, medical-grade silicone and lightweight materials, the mask provides comfort, minimizes skin irritation, and prevents pressure sores. Adjustable straps help maintain a secure fit throughout the night. This mask improves respiratory function, promotes restful sleep, and ensures optimal effectiveness of BiPAP therapy.