Aluminum Universal Tapered

The additional length allows enough taper to be machined into the couplings to accommodate a wide variation in the outside diameter of the duct while still having enough thread engagement to give the couplings good pullout strength. The four size of couplings in this series will connect the whole range of SDR and SIDR innerduct from 1" to 2". The couplings work equally well with corrugated, ribbed, or smooth-wall conduit. Cabletec® Tapered Universal Couplings are widely used in repair work and are a practical, inexpensive way of reducing inventory costs.