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Spigot for assembling filter unit systems in ductwork. For filter unit systems with horizontal air entry and outlet. For more information see: https://www.trox.de/en/spigots/ksfssp-b2d09eb9a5007fc2 Spigots type KSFSSP for assembling a filter unit system with ducted particulate filters type KSFS for critical requirements. Filter unit system consisting of a ducted particulate filter type KSFS with support legs, for horizontal air entry and outlet. Spigot available for systems of up to six filter units in a row, factory assembled. The arrangement of the spigots can be selected. The air outlet is fitted with air deflection plates that ensure a uniform airflow through the system and reduce the total differential pressure. Leakage test for the entire filter unit system.