Material aluminum alloy, 0.0046 to0.0054 in. Thk; material finish wash primer per mil-c-15328; paint black, color number 37038 per federal standard 595; 5.173in. Lg; 1.550 in. W; inside frame lg 4.623 in. Starting from left side inward 0.290 in.; inside frame w 1.310 in.
