The Helios ELFBR250 replacement air filter is a high-quality filter for ventilation systems, offered in a convenient set of five pieces. This replacement filter is made from regenerable synthetic fiber and has a filter class of G4, making it ideal for efficient air purification. With a temperature resistance of up to 100 °C and a self-extinguishing fire behavior according to DIN 53438 F1, this air filter ensures both safety and durability. The filter's regenerability is between 10 and 15 times, meaning it can be used for an extended period before replacement is necessary. The separation efficiency of approximately 93.8% ensures that dust and other particles are effectively removed from the air, while the dust holding capacity of 122 g/m² highlights the filter's high performance. This replacement air filter is an essential element for anyone who values clean and healthy indoor air.