20.812" overall length 1.000" overall width four 0.250 in. bolt holes on center line 0.500 in. from outside edge along length spaced 5.906 in. 5.875 in. 5.906 in. center to center 1.562 in. bolt hole centers to width ends; groove 0.562 in. wide by 0.438 in. deep along entire length; one top outside edge chamfered 0.062 in. by 0.062 in.
