Features 1、Adopts of PTC ceramic heating element and aluminum tube, low thermal resistance, high heat transfer efficiency. 2、This product is a electric heater with automatic constant temperature and energy saving. 3、This PTC ceramic air heater has the characteristic of surface insulation and high security. 4、With mounting holes, easy to install. 5、Application: air conditioner, electric heater, instrument, general appliance, air curtain machine, humidifier, etc. Specification 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 surface insulation and high security. With mounting holes, easy to install. Application: air conditioner, electric heater, instrument, general appliance, air curtain machine, humidifier, etc. Specification: Material: Aluminum Weight: 140g/4.9oz Heating material: PTC thermistor Heating mode: Heat through the flow of air. Lead material: silica gel high temperature wire Power: 300W Size: 110*50*26mm/4.3*2*1inch (corrugation length 66mm) Package List: 1 x PTC Ceramic Air Heater Package List