MULTIPURPOSE - Duct flanges are suitable for heating cooling ventilation HVAC systems, and are widely used in air ventilation systems in homes, kitchens, bathrooms, garages, and factories. WHAT YOU GET - The package comes with 1 x Duct Connector that Interface Outer Diameter: 73 mm / 2.9 inch; Diagonal Mounting Hole Distance: 100 mm / 3.9 inch; Distance Between Adjacent Mounting Holes: 50 mm / 2 inch; Base Outer Diameter: 113 mm / 4.4 inch.RELIABLE MATERIAL - Made of Galvanized Iron, which is Anti-corrosion, cold-resistant, high-temperature resistant, not easy to deform, and durable.
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