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NDS HDPE Corrugated Adapter, 4 in. Drain Pipes & Fittings Spt X 4 in. Corr. Hub 451 - The Home Depot
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SharkBite 1/2 Inch CTS x 1/2 Inch PVC Transition Coupling, Push to Connect Brass Plumbing Fitting, PEX Pipe, Copper, CPVC, PE-RT, HDPE, UIP4008A - Amazon.com
![NDS HDPE Corrugated Adapter, 4 in. Drain Pipes & Fittings Spt X 4 in. Corr. Hub 451 - The Home Depot NDS HDPE Corrugated Adapter, 4 in. Drain Pipes & Fittings Spt X 4 in. Corr. Hub 451 - The Home Depot](https://images.thdstatic.com/productImages/fa8118bc-eb90-4d35-aeec-4a429e840366/svn/black-matte-nds-polyethylene-pipe-fittings-451-77_600.jpg)