Series 300 Thermoplastic
Molded from a custom-engineered thermoplastic blend that provides economy with function. Comfort and compatibility, without compromise. Low-profile design. Multi-position cartridge placement. Extra-large inhalation valves. Patented corrugated exhale valve. Low “dead air” space. Unique low-fitting design. Use the same replacement parts as the Comfort-Air® series 100 silicone face piece. Swivel strap retainers.