Metal Straight Pipe FlangeWhy Choose This:★Interface Outer Diameter: 73 mm / 2.9 inch; Diagonal Mounting Hole Distance: 88 mm / 3.5 inch; Distance Between Adjacent Mounting Holes: 43 mm / 1.7 inch; Base Outer Diameter: 98 mm / 3.9 inch; Color: Grey; Material: Galvanized Iron, Stainless Steel; Packing List: 1 x Duct Connector, 1 x Stainless Steel Clamp★Application: Duct flanges are widely used for air ventilation systems in home, kitchen, bathroom, garage and factory etc.★Instruction: Screw the flange securely to the air inlet, air outlet, wall, ceiling or other surface for connecting to the ventilation system.★Advantages: 1. The connector is made of galvanized iron, which is anti-corrosion, cold-resistant, high-temperature resistant, not easily deformed, and durable. 2.
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