Anodized Aluminum Metal Letter Finish
The faces and edges of the letters are prepared the same as for satin aluminum.
The entire letter is then clear anodized by immersing the letter in an acid
solution and passing an electric current through the solution. The resultant
surface coating increases the letter's resistance to corrosion and provides
increased resistance to abrasion.
Not recommended for letters over 12" in height or 1" in depth.