The G3984 is for CO2 laser wavelengths. LGF Full View frame with clear polycarbonate lenses. Glendale's polymer Diffused Viewing Only (DVO) designed eyewear maximizes visibility, with lightweight frame designs while providing unsurpassed attenuation for the entire range of laser wavelengths. 89 % VLT (visible light transmission). LGF Full View frame features a one-piece polymer lens with integral molded side shields and adjustable earpieces. It fits over most prescription eyewear and meets ANSI Z136.1, Z87.1 and EN207. CE Certified.