Part name assigned by commerical agency is window, treatment tank; 1 unit per assembly
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 5985-01-641-6706
NSN 5930-01-523-1060
NSN 6620-01-517-0014
NSN 4140-01-108-0161
NSN 6685-00-169-1654
NSN 6610-01-525-8235
NSN 5935-00-402-9241
NSN 7035-01-650-5774
NSN 5999-01-004-7300
NSN 6145-01-554-9273
NSN 6645-01-519-3007
NSN 5999-01-004-5219