Filbox Quad filter boxes are designed exclusively for use with Sicflux Maxx and ACI exhaust fans, ensuring efficient filtration and durability in demanding environments. Made from durable ABS plastic, they feature a square air inlet and circular outlet, making it easy to connect to exhaust units. Compliance with the NBR 16401/3 standard ensures effective particle removal, contributing to a healthier work environment. Installation is simplified through tool-free connectors, and maintenance is quick thanks to the ergonomic access cover, making the Filbox Quad a complete solution for outdoor air filtration.