Deliver from 30% - 99% Oxygen; Low - Medium - High oxygen concentrations with one mask. Compatible with standard Nebulizer for Drug therapy. All patient exhalation is filtered through submicron, hydrophobic 3M™filter. Protects healthcare workers and patients. A closed mask breathing system with integral 3M™ filter maintains respiratory isolation during oxygen and drug aerosal therapy, reducing the risk of airborne infections such as SARS and influenza. Over 99.99% efficiency (BFE/VFE). Extra large oxygen reservoir ensures highest possible oxygen concentration while intake valve allows patient to make-up air from atmosphere if necessary. 3 mask sizes (Large Adult, Small Adult and Child) ensure best fit possible. Cost effective; Replace Low, Med, High Oxygen concentration and nebulizer masks with one mask. 100% latex free and disposable. Patent pending.