Welcome to our store! This PTC heating element features surface insulation for safe and reliable operation with a long service life. It provides constant temperature heating without open flame and heats up quickly. Designed with mounting holes for easy installation, this energy-saving system gradually reduces power within certain ranges as the heater increases the ambient temperature. It is applicable for use in heaters, humidifiers, drying machines, air conditioning, and other common appliances. Specifications: Condition is 100% brand new, heating material is PTC thermistor, color is silver, rated power is 400W, rated voltage is 12V, size is approximately 150 x 68 x 18 mm (5.91 x 2.68 x 0.71 inches), installation hole distance is approximately 137 x 55 mm (5.39 x 2.17 inches), hole diameter is approximately 3.5 mm (0.14 inches), and weight is approximately 111 g. Package includes: 1 x PTC heating element. Satisfaction: Our customers are our top priority. If you find any product problems after receiving the goods, such as damage and incorrect quantity of goods, please contact the seller immediately. We will do our best to provide you with satisfactory after-sales service.