About This Contents included: (5) Dust collection box assembly panel (1)Stainless Butterfly Ventilator(1) Cord Grommet (6)Wood Screw - #10, 5/8"(34)Machine Screw - M4, 8mm(4)Machine Screw - M3, 6mm(31)Hex Nut - M4(1)Y Fitting - 4" to 4" and 2.5"(1)Inlet Flange - 4"(1)Rubber Coupling with 2 Hose Clamps V-Shaped Bottom Panel Dust Collection Function: Effectively collects dust and debris from both above and below the router table, improving dust collection efficiency and preventing dust buildup at the bottom. Easy Access Door: Equipped with a magnetic catch door, allowing users easy access to the router. Quick Assembly: Assembling our router table dust collection bucket is quick and straightforward. Durable Construction: Made from durable steel, this dust collection bucket is compatible with MDF and Phenolic table tops.