https://www.acehardware.com/departments/plumbing/parts-and-repair/pipe-hangers-and-straps/4090148
Sioux Chief Suspensulator 3/4 in. Black Plastic Suspension Pipe Clamps Mfr# 558-E3PK2 - Ace Hardware
3/4 inch CTS Sioux Chief 558-E series tube suspension clamp and insulator shall be used where necessary to secure and/or insulate CTS piping through studs or...