PTC air heater is one kind of heater that are able to maintain automated temperature control and power saving. It depends on PTC elements as its heating resources, and corrugated plate made of aluminum alloy as its radiator. The heaters are processed by conglutination and welding. Product Features: - Very low air resistance - Long service life - No Thermostat Required - Virtually unlimited life - No moving parts to wear - Very low cost - No electrical noise - The higher the temperature, the more electricity efficient - Does not burn when in contact with paper, matches or clothes