The Helios ELF-ALB 250 F7 is a fully synthetic air filter engineered for high-efficiency particulate filtration in HVAC systems. Constructed from synthetic filter fleece and supported by a durable Fiberplast frame, this filter meets the stringent DIN EN ISO 16890 testing standards. Classified as ISO ePM1 50%/F7, it effectively captures fine particles, including PM1, to improve indoor air quality and protect ventilation equipment. Suitable for both residential and commercial applications, the ELF-ALB 250 F7 ensures reliable and consistent filtration performance for healthier and cleaner air environments.