The AQCF2530OW from eSource Optics is a Optical Window with Wavelength Range 157 nm, 193 nm, 248 nm, 308 nm, 350 nm, Window Diameter 25 mm, Window Diameter 0.98 Inch, Thickness 3 mm, Thickness 0.12 Inch. More details for AQCF2530OW can be seen below.