Four window set
A transparent item of a predetermined size that permits unobstructed and undistorted view of a desired area. It may include a frame, have reference markings, grid lines and may be heat strengthened and/or tinted. It is generally used where safety, security, and/or the restriction of foreign matter are required, such as the visual examination of the inside of pressurized tanks, liquid sights, controlled liquid flow, and inspection of equipment enclosed in a housing. See window (as modified); scale, cathode ray tube; scale, plotting; window, metal; window, wood; and window panel, aircraft.
Classification: Pressed or molded glass articles, wired or not, for building or construction;leaded glass windows etc; formed multicellular or foam glass
NSN 6110-01-101-8716
NSN 6135-01-230-4399
NSN 5935-00-729-4099
NSN 6105-01-551-3328
NSN 6685-01-644-1055
NSN 5999-01-299-4432
NSN 5945-00-553-9886
NSN 6645-01-141-7737
NSN 5910-01-447-0191
NSN 5985-01-206-4729
NSN 6145-00-070-9368
NSN 5975-00-410-6172