Straight Duct Coupler - 60 mm, 75 mm, 90 mm

Straight coupler for warm air ducting: two ducts of equal nominal size pushed together and clamped. The part everyone needs and nobody plans for, for a duct cut too short, a repair, an extension. Overall length 60 mm, engagement 30 mm per side. The centre collar (3 mm) is a positive stop, so both ducts sit equally deep and the joint stays centred. Both ends are male spigots: the flexible duct slides over them and is held by a hose clamp. Each end carries a circumferential groove so a standard W…

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