PTC Insulative corrugated heater (PTC Air heater insulator, PTC Heater for warm air-conditioner) is a type of high-power, non-surface-electrified PTC heater designed with airflow cooling. PTC elements are securely mounted inside aluminum tubes and electrically insulated from the tube walls. Use: This PTC component is intended for heating air or solid materials. The PTC material features a self-regulating characteristic that maintains a stable surface temperature. Advantages: Safe operation, rapid heating, long service life, automatic temperature control, and low operating noise. Applications: Suitable for use in various equipment, electric heaters, general household appliances, and air curtain machines. Heater Type: Fan Heater Installation: Portable, Freestanding Mounting hole size: φ4mm Heating method: Heat transfer via airflow Lead wire: High-temperature resistant wire Lead wire length: 200mm Bare wire length: 10mm Note: Power rating is a reference value. Actual power output may vary depending on heat dissipation conditions. In different operating environments, power may vary within ±20% tolerance. Power: 70W Color: Black Material: Plastic Dimensions: 90 x 60 x 42mm Package Contents: 1 x PTC Insulative corrugated heater Please note: Other items shown in images are not included. Lighting effects and display settings may cause slight variations in color appearance between the product image and actual item. Measurement tolerances are ±1–3cm.