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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.

size chest(in.) waist(in.) hips(in.)
XS 34-36 27-29 34.5-36.5
S 36-38 29-31 36.5-38.5
M 38-40 31-33 38.5-40.5
L 40-42 33-36 40.5-43.5
XL 42-45 36-40 43.5-47.5
XXL 45-48 40-44 47.5-51.5
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