What is an Intentional Leak Port?
Yes, every mask system has to have exhale ports. This is a way to remove your exhaled air from the mask system. Without this, you would be breathing in your exhaled air, and would eventually run out of oxygen. Some masks have holes to vent the carbon dioxide, some vent at the elbow, and some vent in a swivel. So when you put on your new mask you will be able to determine where the vent ports are located.