Mask, Pulmodyne, BiTrac NIV SE Full Face Mask with Standard Elbow 22mm Female, OmniClip with Silicone Forehead Pad and Reusable Head Strap, - Penn Care, Inc.
Examples of masks for NIV: oro-nasal (a, d) and nasal masks (b, c), and... | Download Scientific Diagram
VariFit™ NIV vented mask with anti-asphyxiation valve