The SC611 is a P2 mask that conforms to the safety standard AS/NZS 1716:2003. Made from a triple layer of loaded polypropylene this mask provides low breathing resistance with high filtration efficiency. It has an adjustable nosepiece and inner foam to provide a custom seal for different face sizes and shapes, and a double elastic band that is sealed to the mask itself for durability. In addition the SC611 has a silicon exhalation valve on the front of the mask to make breathing easier and stop fogging of safety glasses or goggles. The SC611 comes in boxes of 20 masks.