1Adopts of PTC ceramic heating element and aluminum tube, Low thermal resistance, high heat transfer efficiency 2This product is a electric heater with automatic constant temperature and energy saving 3This PTC ceramic air heater has the characteristic of high security, and surface insulation. 4With mounting hole, easy installation 5The lead material adopts high temperature resistance wire, safe for use Features:Adopts of PTC ceramic heating element and aluminum tube, low thermal resistance, high heat transfer efficiency This product is a electric heater with automatic constant temperature and energy saving This PTC ceramic air heater has the characteristic of high security, and surface insulation. With mounting hole, easy installation The lead material adopts high temperature resistance wire, safe for use Application: air conditioner, electric heater, instrument, general appliance, air curtain machine, humidifier Made of high quality material, with long serving lifeSpecifications:Heat material: PTCVoltage: 220V Power: 1000WHole pitch: 150 x 68mm / 5.91 x 2.68inInstallation hole: 8*4mmSize:17 x 7.8cm / 6.70 x 3.07in(with ripple length of 126mm)Weight: 294gPackage included:1 x Ceramic Air HeaterNote: No need to distinguish "Positive pole"and "negative pole