
No returnable if used. For more information about our return policy, please refer to the Orders and Returns.
3M rated airflow indicator to be used with the Powerflow and the Breathe Easy powered air purifying respirators only. Level marks have been printed on the tube – markings differ depending on which system is in use – to allow one to keep an eye on the respiratory protection quality. If the ball indicator falls below 4CFM (4 ft.3/min), it means the filter has reached its saturation limit or there may be a malfunction in progress. Sold individually.
3M manufacturer’s code: 520-01-21
Data sheet
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