CERAMIC AND ALUMINUM: This heater elementsadopts PTC ceramic heating elements, Low thermal resistance, high heat transfer efficiency.CONSTANT TEMPERATURE FUNCTION: This heater elementsis a electric heater with automatic constant temperature and energy saving.SAFE: The lead material adopts high temperature resistance wire and and the surface is insulated. safe and durable.EASY TO USE: With mounting hole, it is easy and convenient to install.WIDE APPLICATIONS: Fit for air conditioner, electric heater, instrument, general appliance, air curtain machine, humidifier , widely used.Voltage: 220VPower: 1000WHole pitch: 150 x 68mm / 5.91 x 2.68inInstallation hole: 8x4mmSize: 170 x76x26 mm (with ripple length of 126mm)Note: No need to distinguish "Positive pole"and "negative pole.Colour: black + silverMaterial: ceramic PTCPackage Contents:1 * Ceramic Air HeaterOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.