7-14mm Thickness 5.4sqft Car Cell Foam Sound Proofing Insulation Deadener Mat Memory Foam Heat Sound Deadening Mat 19.7x39.4inch 8mm X 0.4mm Spring Size( Outer Diameter):

Spring Size( Outer Diameter):

Color: golden

Inner Diameter: (Vehicle Hub Size) 60

Capactive Load: 2

Parallel Hole Distance: 162mm / 6

7-14mm Thickness 5.4sqft Car Cell Foam Sound Proofing Insulation Deadener Mat Memory Foam Heat Sound Deadening Mat 19.7x39.4inch 8mm X 0.4mm Spring Size( Outer Diameter):Description: Strong sound insulation and absorption performance, heat insulation mat. Reducing energy consumption with good performance of heat insution. Strong self viscous performance. Making sound more centralized and harmonious by changing the way of sound transmission. Installation: 1, Make insulation materials and sheet metal firm fit and play best adhesive, damping performance. 2, Do not cover the chassis wiring or air holes when you