Matl: al alloy per qq-a-250/11 6061-t6, chemical film per mil-c-5541 cl 3, 30.305 in. Lg, 15.000 in. W, 0.500 in. High, lip around edge 0.339 in. Deep, 4 6 hole mounting plates, 2 on each length, captive screws 34, screw, panhead 12, washer flat 46, washer locking 34, plate handling 4, markings: torque cover mounting screws to 20 in. Lbs
