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 6110-01-025-1286
NSN 5999-01-069-1520
NSN 5960-00-984-1515
NSN 5855-01-229-3864
NSN 5930-01-180-1217
NSN 6685-01-591-5229
NSN 5895-01-231-2372
NSN 6130-00-266-7496
NSN 5915-00-179-4623
NSN 6610-00-081-2365
NSN 6220-01-643-6560
NSN 6150-01-421-4028