Specification: Diameter: 6 inch Shape: Y-shape Material: galvanized steel Package Included: 1 pc duct splitter Rubber Gasket: All outlets have black sealing rings to ensureseamless connection to other components. Function: 3 way duct adapter let the exhaust ducts inthe home no longer be cluttered. Great Air tightness: Made of galvanized steel, bonded withsealant to effectively maintain great air tightness. Easy to Install: When installing, only need to use clampsand tighten the screws to complete the installation.