Dynamat Pro Speaker Kit (457mm X 457mm X 5mm) 2 Sheet Pack (0.84 Sq Metre Coverage) Lubrication Equipment Heavy duty manufacture Contents Size:20in Heavy duty manufacture Contents The blade can be firmly set at the desired angle by means of a knurled nut • Stop Noise & Back Wave Distortion • Maximize Speaker’s Dynamic Range • Improve Your Listening Environment • Ultimate Noise & Vibration Control • USA Made With Dynamat Quality Kit Contents (2) 18“ x 18” Sheets Dynamat® Xtreme® For Inner Door Panel To Stop Vibration and Noise (2) 10” x 10” x 1” Dynamat® Back Wave CCF Behind The Speaker To Cut Back Wave Distortion (4) 32” Dynamat® Pro Speaker Ring Strips Around The Speaker Frame To Enhance Performance Whether you have the latest and greatest audio components or you want your factory system to sound its best