Heat and weathering resistant, anti-reflection coated 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 6220-01-461-2910
NSN 5905-00-417-0774
NSN 5835-00-447-1924
NSN 6685-01-040-2238
NSN 5990-00-675-8398
NSN 5999-00-201-0309
NSN 6150-01-531-7238
NSN 6650-01-034-6040
NSN 6220-01-308-6218
NSN 5998-01-461-0678
NSN 6135-01-487-6275
NSN 6145-01-154-9606