"NYLON REINFORCED PHENOLIC RESIN SHEET; 2.570 IN. LG,2.480 IN. W,0.125 IN. THK; TWO 0.135 IN. W SLOTS 1.210 IN. LG FROM BASE,1.170 IN. APART; BASE EDGE CHAMFERED 50 DEG X 0.050 IN. BOTH SIDES; USED WITH SEAL P/N 39-28137-2 TO SEAL ENGINE CONTROL CABLE RIGHT HAND PASSAGE IN CLOSURE RIB,INBOARD STRUT NUMBER 2"