Designed for severe duty use, the DEI Ultra 47 Starter Shield offers the highest level of protection. Constructed of two layers of material, a highly reflective outer layer combined with a high heat inner layer and able to withstand direct heat of up to 1350 degrees Fahrenheit, the Ultra 47 is the perfect choice for EXTREME high heat applications where engine heat soak is a problem. Measures 24 inches by 7 inches.