Maxxon® Acousti-Mat® 3/4 Premium is Maxxon’s highest performance sound control mat. It provides a generous 3/4" air gap between the subfloor and Maxxon underlayment with an added layer of acoustically dampening fabric to further reduce airborne and impact sound transmission. Ideal for challenging floors, Maxxon Acousti-Mat 3/4 Premium increases IIC levels of the floor/ceiling assembly by up to 20 points over standard wood frame construction.