Scott Safety Pro² P3 particulate filter for solid/liquid particles, radioactive/toxic particles, bacteria, viruses, fumes/mists. Excellent low breathing resistance; they are light in weight and are certified to AS/NZS 1716. Bayonet locking mechanism. Unique protective covers with recessed inlet grills. The covers protect the filters from splashes and sparks. Designed for use with the Scott Safety’s Profile² half and Scott Safety Promask Twin full face respirators.