4" Duct Connector Flange, 2 Pack ABS Straight Pipe Exhaust Inlet Outlet Duct Mounting Plate with Screw for Air Heating Cooling Ventilation HVAC System Hex Nut Sockets The hexagonal part is designed

The hexagonal part is designed for a wrench to tighten

* 1 x Wool Polishing Wheel

so that water can not enter the inner of the furniture when wet

Hypotenuse Bottom Side Length: 29mm

4" Duct Connector Flange, 2 Pack ABS Straight Pipe Exhaust Inlet Outlet Duct Mounting Plate with Screw for Air Heating Cooling Ventilation HVAC System Hex Nut Sockets The hexagonal part is designedDuct flanges are widely used for air ventilation systems in homes, kitchens, bathrooms, garages, factories, etc. What's more, it can be used on spiral exhaust pipe, exhaust pipe elbow fittings, fan hose connector. Specification Color: Black Material: ABS Plastic Interface Outer Diameter: 100mm 4 inch Overall Height: 50mm 1. 97 inch Base Outer Diameter: 130mm 5. 12 inch Screw Hole Diameter: 5. 5mm 0. 22 inch Distance Between Adjacent Mounting Holes: