Joe sage

Hey just trying to figure out the same. Got ctx done. They told me I got 35/20 and air 80. However after looking they don't even make the 15%. When I asked they said "don't worry you will get the 20." So got a but meter to test, I see numbers go from ~200 to ~30, but my wife's factory tint does very similar. They have me some lot numbers but do not know how useful that would be. Wondering how I should approach the situation, or somehow confirm what type of tint I got.