Specification: Condition : 100% Brand New Type: Heat Sound Deadener Insulation Mat Color: Silver/Black Material: Aluminum & Foam & Adhesive Backing Item Length: 25 CM = 10″ Item Width: 40 CM = 16″ Size: 20PCS 25cm x 40cm=20PCS 10»x16»=2sqm=21.52sqft Attachment Type: Self-Adhesive Typical Temperature Stability: -30° to 195° F Feature: .