1. Silicone material: This heating pad is made of flame-retardant silicone, which has temperature resistance, with a high-temperature resistance up to about 200°C and a low-temperature resistance down to about -60°C. 2. Automatic temperature control: The heating pad is equipped with an imported normally-closed temperature control device. It will automatically cut off the power after reaching the set temperature, which is relatively safe and can be used with a certain degree of confidence. 3. Exquisite craftsmanship: This heating pad is well-made, with waterproof and insulating properties. It is also equipped with a composite sleeve, having a relatively long service life. 4. Application scope: This heating pad is suitable for various vehicles, including trucks, factory machinery and equipment vehicles, semi-trailers, off-road vehicles, tractors, bus commercial vehicles, agricultural vehicles, etc. Whether it is construction machinery, marine equipment, generators, etc., it can help ensure normal operation in cold environments. 5. Rapid heating: The heating ring of the filter element heats up relatively fast. The surface temperature in dry burning can reach about 80°C within one minute. A pre-heating of 5 to 10 minutes can achieve certain results. Item type: Silicone material Specifications: Length: Approximately 250 mm/9.8 inches Width: Approximately 90 mm/3.5 inches Power: 80 watts The filter elements of each model are different, so it is necessary to determine which size to choose according to the diameter or circumference of the filter element. For example, 250 x 90 mm is suitable for a filter element with a circumference of about 250 mm. 90 mm refers to the height of the heating plate. When measuring the circumference or diameter, as long as the circumference is appropriate, it can be used. The height difference does not significantly affect the use.