The 3M dark green aluminized polycarbonate faceshield window helps protect against flying particles and heat in high-temperature applications. With an easy-pivot assembly and extra thickness, it is great for bright, high-heat furnace operations. The 3M clear aluminized polycarbonate faceshield window helps protect against impact and heat in high-temperature applications. With an easy-pivot assembly and extra thickness, it is great for bright, high-heat furnace operations. (bul) Protects against impact from flying particles. (bul) Aluminized window reflects up to 80% radiant heat. (bul) .080" thickness great for bright, high heat furnace type operations. (bul) Windows mount inside crown for added support. (bul) Size 9" X 14.5" X 0.080". (bul) Meets the High-Impact Requirements of ANSI Z87.1-1989. (bul) 10 faceshields/case 3M provides reliable head and face protection products that meet regulated performance and safety requirements.