The THX Studios in San Francisco CA, was a super cool project. We here at Amcoe Sign are big fans of George Lucas and his movies and were thrilled to build these letters for them. These letters are Stainless Steel, which is a fantastic material to use when fabricating signs in San Francisco. The salt air in San Francisco wears away the finish on signage very fast, but stainless steel is pretty much impervious to sea salt, so it will last a good long time.