U-clamps for 3/4 inch PVC pipe. From Lee Valley Tools:
“The 4 inch clips are designed to snap over the pipe to secure plastic sheeting, netting or other material. Made from high-grade PVC that is impact-, scratch- and UV-resistant, they are suitable for use indoors or out.
The clips secure to pipe with a snug friction fit, permitting disassembly for reuse or storage. (PVC cement may be used for permanent installation.)”
I have 4 unopened packages of 10 available. Lee Valley’s price is $8.60. I will take $5 per package (please take all 4 packages :))