10 Inch Duct Connector Flange, Metal Straight Pipe Flange Square to Round Interface Air Duct for Heating Cooling Ventilation HVAC System OD 3.5 Inch <3> 30mm ------ 8pcs

<3> 30mm ------ 8pcs

3 pcs Nuts

press the black button and push the metal protective strip outward

Widely used on holding laboratory freezer tubes or centrifuge tubes

for Audi A8 Quattro 4

10 Inch Duct Connector Flange, Metal Straight Pipe Flange Square to Round Interface Air Duct for Heating Cooling Ventilation HVAC System OD 3.5 Inch <3> 30mm ------ 8pcsDuct 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: 250 mm 9. 8 inch Diagonal Mounting Hole Distance: 270 mm 10. 6 inch Distance Between Adjacent Mounting Holes: 150 mm 5. 9 inch Base Size: 280 x 280 mm 11 x 11 inch (L*W) Packing List: 1 x Duct Connector Advantages 1. The connector is made of galvanized iron, which is