CMT48 is the thermal adhesive tape which can protect speaker from dust. No dust coationg occurs with CMT48, because hot-melt type adhesive is used. You can install CMT48 inside of speaker grille. CMT48 doesn't disturb sound transmission. CMT48 is very good material for LCD/PDP TV speaker grille, Micro Speaker Gasket Net and other Electronic parts ,which need protection from dust. We can produce CMT48 according to customer's demands. As a high quality product, our CMT48 is very excellent and so precious.