Steel qq-s-00640 fs1009 to fs1015 condition 4 or 5, enameled, tt-e-489, 45 degrees elbow 5.562 in. O.D., flange 7.500 in. O.D., 1.375 in. W, bracket 0.250 in. Thk, 2.750 in. H, 7.000 in. Lg o/a, with 2 slots 0.437 in. W by 1.000 in. Lg, and 2 supports 0.250 in. Thk, 1.625 in. H, 5.812 in. Lg o/a