Specifications include, but are not limited to: Blank Aluminum, No Radius, No Holes, 48”x120”x0.063” 1 - 1.0000 Each Purchase No Item Notes: • All aluminum blanks and aluminum sheets shall conform to the requirements of ASTM B209 for Alloy 5052-H38 or 6061-T6. • Each size specified shall consist of a single piece. All edges shall be free of burrs. • All sign blanks and aluminum sheets shall be finished on both sides with a chromate conversion coating in accordance with ASTM B449, Class 2. The treatment shall produce a uniform coating tightly adherent to the metal, showing no dusting of the coating surface, and having a color within the range of silvery iridescent to pale yellow. • All circles, U.S. cut-out shields, and interstate shields shall be die-cut so they will be accurately cut to a uniform size and shape.