Feature:_x000D_ _x000D_ The wire used in the heater are all high temperature resistant silica gel wire, and the temperature resistance is more than 200 C. _x000D_ This product is suitable for small space heating, dehumidification and warmth preservation within 0.5 cubic meters. _x000D_ The service life of the product is long. The general standard is that the power attenuation after 3 years is less than 10%. _x000D_ Because of the temperature resistance limitation of the fan, the heater is suitable for the ambient temperature range of -5 - 65. _x000D_ Surface insulation, safe to use. _x000D_ This product is suitable for heaters, air conditioners, automobiles, etc. _x000D_ _x000D_ Specification:_x000D_ Voltage: 110V_x000D_ Rated power: 250W; 350W(Optional)_x000D_ _x000D_ Working voltage of fan: 12V; 24V (Optional) _x000D_ Product dimension: Approx. 90 x 61 x 42mm / 3.5 x 2.4 x 1.7in_x000D_ _x000D_ Distance of installation hole: Approx. 86mm / 3.4in_x000D_ Diameter of installation hole: Approx. 4mm / 0.16in_x000D_ Suitable room: