I'm going off the sticky notes in the package I got. I'll go over each product as I test and email each company if I need more info. I know I need to email Lightning Audio, as I can't find any specs on their products.

I just checked out Audio Technix site, I'd definitely like to test their products, especially being that they have different constraining layer thicknesses than everyone else. I'll be emailing Second Skin as well, as they also have their own thicknesses on the constraining layer.