4 Inch Duct Connector Flange, 2 Pack Metal Straight Pipe Exhaust Hose Flange for Heating Cooling Ventilation HVAC System 2.9mm(ID)x4.9mm(OD)x300mm(L) Easy to set the snap

Easy to set the snap fasteners in place with the setting die

Coil inner length :54mm/2

Cutting Edge Diameter: 8 mm(3/10")

25mm x 38mm / 6

Surface Treatment: Passivating

4 Inch Duct Connector Flange, 2 Pack Metal Straight Pipe Exhaust Hose Flange for Heating Cooling Ventilation HVAC System 2.9mm(ID)x4.9mm(OD)x300mm(L) Easy to set the snapDuct flanges are widely used for air ventilation systems in home, kitchen, bathroom, garage and factory etc. Specification Color: Grey Material: Galvanized Iron Interface Outer Diameter: 95 mm 3. 7 inch Diagonal Mounting Hole Distance: 108 mm 4. 3 inch Distance Between Adjacent Mounting Holes: 53 mm 2. 1 inch Base Outer Diameter: 119 mm 4. 7 inch Packing List: 2 x Duct Connector Advantages 1. The connector is made of galvanized iron, which is anti