Description
This economical alternative to more expensive mask valves is perfect for CPR training. The integral air filter prevents the flow of contaminants, so you can use it with all standard masks without worrying about getting sick or injured while practicing your skills! Comes 60-pack at an unbeatable price point that will stock up on these essentials.
Small end measures 14mm I.D., 17mm O.D. Large end measures 17mm I.D., 22mm O.D. The filter is woven fabric (not a one-way valve).
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