Aconsists of plate, support, case, 2 brackets, 8 stud assemblys, and nec. Screws; plate and support material-al aly 6061-t4 or -t6 iaw qq-a-250/11 (sm1870-26 or -27) or al aly 380 or a380 iawqq-a-591; case and bracket material-al aly, 5052-h32 iaw qq-a-250/8 (smi870-21) or 6061-t4 iaw qq-a-250/11(smi870-26; all surface items not finished for solderability shall be chromate chem film iaw mil-c-5541, class 1a; dimensions in inches, 5.740 wide, 7.965 long