Why Choose This:★Specification: Color: Silver Tone; Material: Galvanized Iron; 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; Height: 47mm/1.9 inch; Packing List: 4 Pcs x Duct Connectors★Application: The duct flange is widely used as air inlet and outlet connector in ventilation systems, suitable for ducting your air conditioning system, dust collection system, tumble dryer, extractor fan, exhaust fan, in-line extract fan, cooker hood, and so on.★Instruction: Screw the flange securely to the air inlet, air outlet, wall, ceiling or other surface for connecting to the ventilation system.★Advantages: 1.
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