i was talkin to them above me and below you. hell knows what "mil" is. this kinda brings it back to my point of just using centimeters and such, make it all consistent, dont make up your own measurements. its silly. its hard to hell how thick it is, but it looks 90% the same as dynamat, it just doesnt have the lettering printed on the foil. its like brand name versus generic products. overall theyre both roofing tar with foil on one side and paper on the other. that foil costs more than anything anyways. how can so many people be on the automotive forums, being into cars this much and not knowing simple things like millimeters and inches and conversions between the two? its just sad. im not saying i know everything about everything, but at least i can tell a 25mm wrench from a 55mm, you know what i mean?