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 6685-00-526-9433
NSN 5996-01-367-6557
NSN 5998-01-059-7067
NSN 5975-00-038-2813
NSN 5930-00-053-1680
NSN 5975-00-125-6683
NSN 5925-00-454-9232
NSN 5915-01-461-2153
NSN 6610-00-943-3097
NSN 5935-00-113-5171
NSN 2925-01-440-9912
NSN 6620-00-153-0982