The AQSP1230OW from eSource Optics is a Optical Window with Wavelength Range 200 nm, 248 nm, 280 nm, 313 nm, 365 nm, Window Diameter 12.7 mm, Window Diameter 0.5 Inch, Thickness 3 mm, Thickness 0.12 Inch. More details for AQSP1230OW can be seen below.