Protective covering material on both sides
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 5835-01-303-6563
NSN 5985-01-053-9921
NSN 6105-00-411-3080
NSN 2925-01-486-4210
NSN 6145-01-648-1491
NSN 6150-01-513-5732
NSN 5990-01-448-2751
NSN 5999-00-371-8312
NSN 6685-01-540-0921
NSN 2925-00-572-0454
NSN 5905-01-129-7348
NSN 5960-01-217-1479