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 2925-00-594-1157
NSN 2925-00-690-8763
NSN 6240-01-280-5347
NSN 5920-01-153-2690
NSN 6105-01-441-8547
NSN 5996-01-608-4360
NSN 5975-01-431-7932
NSN 5935-01-309-9800
NSN 4140-01-610-9968
NSN 5998-00-810-8374
NSN 5835-01-645-2892
NSN 5915-01-113-7872