The Rs Pro Steel Tubular Heater 240W 4ft is a powerful air humidifier filter designed for effective air treatment in various environments. With a length of 1220 millimeters, a compact width of 40 millimeters, and a height of 20 millimeters, this filter offers an optimal solution for improving air quality. Made from high-quality rubber, it provides high flexibility and durability. The hardness of 50 Shore A ensures that the filter remains stable under pressure and delivers reliable performance. The Steel Tubular Heater features an M8 thread, making installation and replacement easy. It is compatible with the I-PRO brand and is ideal for use in air humidifiers to ensure pleasant and healthy indoor air. This filter is an excellent choice for anyone who values efficient air treatment.