The Helios ELF-ALB 30/20 F7 is a high-performance synthetic air filter designed to optimize air quality. Made with durable synthetic filter fleece and housed in a sturdy Fiberplast frame, this filter is tested to meet DIN EN ISO 16890 standards. With an ISO ePM1 50%/F7 classification, it efficiently traps fine particles, improving the air quality in ventilation systems. The ELF-ALB 30/20 F7 is perfect for environments where air purity and system efficiency are crucial, offering long-lasting protection for HVAC systems.