"The item is 14.230 inches long and 10.250 inches wide. It consists of a heatsink, dip-brazed, a cover with brazing sheared from aluminum alloy with Class 5 temper F per MIL-B-20148 specification having 0.050-inch thickness, fins made from fin stock, 53 pads made from aluminum alloy round 6061 temperature T6 per QQ-A-225/8 specification having 0.437 inch diameter and 31 plates made from aluminum alloy sheet 6061 temperature T4 per QQ-A-250/11 specification having 0.125-inch thickness, and two stiffeners made from aluminum alloy sheet 6061 temperature T4 per QQ-A-250/11 specification having 0.062-inch thickness."