Adult Select-a-Vent Air Entrainment Mask, 50/CS

Kit includes mask, high humidity adaptor, oxygen tubing and 6 color-coded diluters: 24%, 28%, 31%, 35%, 40% and 50%. Includes adaptor for high-humidity entrainment. Complete with 7 ft Star Lumen® Oxygen Supply Tubing. Note: Use of oxygen concentrators with air entrainment masks will alter delivered FiO2.