"FRAME AND BONDED GASKET. FRAME MATERIAL STEEL,CRES,QQ-S-766,COND A,CLASS 302,304,OR 316. GASKET MATERIAL RUBBER,SYNTHETIC,MIL-STD-417,CLASS SC,GRADE 515,A1,B1,C1,F2. RECTANGULAR SHAPE WITH APERTURE AND EAR CENTERED ALONG ONE SIDE OF LENGTH. TWO OUTSIDE CORNERS ROUNDED AND TWO OUTSIDE CORNERS BEVELED. DIMENSIONS,9.375 IN. O/A LENGTH,6.344 IN. O/A WIDTH,0.218 IN. O/A THICKNESS,8.125 IN. APERTURE LEMGTH,3.625 IN. APERTURE WIDTH. PROVIDED WITH ELEVEN 0.281 IN. DIA MTG HOLES."