"C/O COVER PN 321470-99,FILTER PN 200501-115-250; MATL CRESS 301,302 OR 304 MIL-S-5059 OR QQ-S-766; 1.750 IN. LG; 1.450 IN. W; 0.033 IN. THK; 4 HOLES 0.173 IN. DIA THRU,1.320 IN. APART ALONG LG,1.160 IN. APART ALONG W; CENTER HOLE 1.210 IN. DIA W/TAB OF 0.190 IN. DIA; 4 PL 0.080 IN. BY 50.0 DEG; FILTER 0.286 IN. DIA W/0.540 IN. R"