TMS brand 1 pound Mass Loaded Vinyl is a high quality vinyl barrier for use to block sound between Walls, Ceilings, Floors, Automobiles, Machinery, Pipes, HVAC and more. Our MLV is manufactured in the USA, is strong and has no odor. This Mass Loaded Vinyl Barrier is special sizing 4' x 4' (16 square feet) weighs 1 pound per square foot, 16 pounds in total. It is an 1/8 of an inch thick and has an STC rating of 26 when hanging by itself. Color is black. Thickness - 0.125" Tensile Strength - 1350 kPa min Tear Strength - 4500/m (26 psi)