The Salter Labs Percent-O2-Lock® Air Entrainment System with Humidity Cup, 7 foot Oxygen Supply Tube and Mask is a translucent, elongated mask with comfortable, anatomical shape. The Air Entrainment Set with Humidity Cup, Tube and Masque delivers accurate oxygen concentrations.

Product Specifications:
• Rotating sleeve entrainment valve.
• Seven different oxygen concentrations (24%, 26%, 28%, 31%, 35%, 40%, and 50%).
• Aluminum nose clip.
• Over the ear elastic head strap.
• Three channels.
• Crush-resistant tubing
• Translucent.
• Spring-loaded mechanism.
• Durable.
• Each.

Percent-O2-Lock Air Entrainment System Transparent, with Humidity Cup, 7Ft Oxygen Supply Tube and Mask by Salter Labs