Check this Element Scott GSR Facepiece now available at RedWolf Airsoft that comes with its own ventilation units stored in the dummy filters... "The Element Scott GSR Facepiece has a hard rubber outer shell for full face protection with the inner being soft rubber structure for comfort and support. It has a adjustable head harness fitting most head sizes with metal mesh / Clear lens and includes 2x Dummy Filter Can unit with fan for active ventilation (Each powered by 2x AAA batteries, not included ) 2x filter cover included when fan is not needed."