Special Features:

Eight 0.204in diameter mtg holes in two groups on 8.240in by 3in and 6inby 3in mtg centers, four 0.625in diameter holes on 7.720in by 3.600in mtg, centers, one 0.312 to 0.800 in radius each end, four corners chamfered0.20in by 45 degs

Properties:

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.