3M's Occupational Health and Environmental Safety division recently introduced a new line of shrouds, called the H-Series Hoods, to the Positive Pressure Respirator line. These new products offer the widest range of headgear available in the industry. The unique, waterfall airflow reduces fogging of the lens and provides a steady stream of air into the worker's breathing zone.
Air enters the hood via a breathing tube attached to the hood.
An airflow plenum channels the air to the front of the hood which escapes out the bottom of the hood or, for added comfort, is channeled into the worker's clothing or protective suit. There are two shroud options as well that will increase a worker's comfort. The collar shroud, along with the positive pressure airflow, helps prevent contaminated air from entering the hood. The comfortable, loose fitting collar makes the hood easy to put on and take off. The outer shroud protects from overspray.