HAP SYSTEM 4 in. Surface Mount Pipe Hanger with Locking System Fits 4 in. PVC, Copper, Stainless and Black Pipe (10-Pack) PL-1111-V40 PK - The Home Depot
4 Inch Plastic Pipe Hanger
Typical Hanger Spacing and Rod Diameter for Horizontal Steel, PVC and Copper Piping