Round Couplers

Round duct couplers (connectors) join two lengths of round plastic ducting end to end, or connect duct to bends, tees and other fittings. A straight coupler is the fitting you will use most on any run — every joint between 2m duct lengths needs one.

Available in all three system diameters: 100mm, 125mm and 150mm, matching our round plastic ducting range exactly.

For a tidy, airtight system, push each joint fully home and seal with foil duct tape — a sealed joint keeps the full extract rate of your fan or cooker hood all the way to the outlet. If you need to change diameter at the joint, use a reducer instead, and support long runs with ducting clips either side of the joint. Order by 3pm for next-day delivery on stocked sizes.