This product is a cost-effective solution to noise absorption and transmitted noise.
Easy to cut and fit to a clean surface.
Foil face is a protective film to stop contamination of the foam.
Easy to wipe clean.
Peel off backing paper, locate and apply pressure. 
Use foil s/a edging tape to seal cut edges that are butt jointed together.
For solving noise problems fit to the inside of  a cover / enclosure and this product will help reduce transmitted noise.