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: Articles of plastics & articles of other materials of heading 3901 to 3914, nesoi
NSN 5925-00-275-7599
NSN 5905-00-323-1272
NSN 6240-00-899-6990
NSN 5998-00-118-5816
NSN 6610-01-078-9238
NSN 5895-01-505-1883
NSN 6645-01-074-8024
NSN 5950-01-553-1183
NSN 6130-01-342-5857
NSN 7035-01-399-5354
NSN 5990-01-046-8530
NSN 6130-01-272-8813