The FH line, equipped with built-in filters, offers a compact and efficient solution for ventilation systems, with G4/M5 class filters that comply with standard NBR 16401-3. Its ultra-compact design and low-profile filter allow installation in tight spaces. Built with reinforced sheet metal and special sealing on joints and access cover, it ensures durability and easy maintenance. With an operating temperature range from -40°C to +65°C, it is the perfect solution for those seeking efficiency, reliability, and convenience in ventilation systems.