The Helios LF 250 air filter is designed for seamless installation on walls and ceilings, effectively covering internal ventilation and duct outlets. It includes a durable light grey polymer frame with an egg crate grille for optimal airflow and minimal resistance. The filter uses a high-quality ISO Coarse 30% (G2) synthetic fibre mat that is thermally bonded and fire-resistant to DIN 53438 F1 standards. With a large filtration surface and a dust storage capacity of 380 g/m², it ensures long-lasting performance and efficient dust capture, making it ideal for residential and commercial ventilation systems.