Face mask for the XCP systems.
This face mask is designed to be used with the right-hand scale of the Mountain High MH-4 type Flowmeter/regulator. The scale is calibrated in thousands of feet and delivers 1.0 liter/minute per 10,000 ft. The XCP face mask is equipped with a 6’ (15.2 cm) feed tube that can be easily shortened if desired.
