The PP-UVFS-38.1-6.35-AR483-AR483 from OPTOMAN is a Optical Window with Wavelength Range 515 to 633 nm, Window Diameter 38.1 mm, Window Diameter 38.1 mm, Thickness 6.35 mm, Thickness 0.25 Inches. More details for PP-UVFS-38.1-6.35-AR483-AR483 can be seen below.