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 5910-00-784-9047
NSN 6220-01-131-5295
NSN 5945-00-849-3673
NSN 5985-00-322-4715
NSN 5975-00-222-4109
NSN 5999-01-401-5322
NSN 5915-01-462-7236
NSN 5965-01-207-7026
NSN 5935-01-003-0821
NSN 5996-00-586-5126
NSN 5960-00-118-2903
NSN 6110-01-407-8861