How to make your car ride cool and quiet? Shenzhen Dhyana Environmental Technology Co., Ltd does the job and provides the same products as Dynamat for you. Dhyana builds yourself a luxury car by reducing the noise from rain, wind, roads, tires and so on, and offers you a quiet, comfortable interior environment. Use our AceMat to reduce noise, stop vibration and insulate heat, then you will enjoy a wonderful ride. DOOR KIT Application Range: For panels on car door enclosures Dimension: 310mm*900mm Packaging Term: 4 pieces in box, 3 boxes in carton Packaging Dimension: 30.5cm*39cm*15cm Functions: 1.Upgrade flimsy car doors to solid stereo boxes! 2.Block down unpleasant noises from road! 3.Eliminate 85% of sound wave distortion! 4.Have more original music from your speakers!.