Fibre-Metal Wide View Faceshield Window comes with a #24 mesh screen and a lens size of 8" X 16 1/2". Nickel-plated copper screen prevents the wearer from injuries due to radiant or blasts of heat and provides sufficient ventilation with no loss of field of vision. Faceshield window is injection molded from propionate resulting in a better Performancecharacteristic than other window materials. It is angle shaped in a unique way for an easy installation, secured fit and a perfect seal against dust, dirt or debris. Faceshield is advised not to be used in places where splash hazards exist. It is SEI certified for its superior quality and Performanceto comply with current ANSI standards.