Description
The AFT24 head support is useful when breathing directly into the AFT21 non-rebreathing T-valve for exercise physiology measurements. The AFT24 head support secures the T-valve directly in front of the subject and minimizes the strain associated with the weight of valves and tubing.
Pictured with AFT21, AFT9, and AFT7 (all not included).

Air Flow Head - Tiered 