Tube Lock Clip 6' length
Tube lock system is used to easily secure both greenhouse poly or shade cloth. Extruded aluminum clips are easily reusable and better secure coverings in high wind conditions. This is a 6' top section of "Tube Lock Clip" only. You'll also need the Tube Lock Base.
Click here for tips and diagram on Poly Film Installation.
These seem to be a one time purchase since you can use them over again. They seem to be the ideal unit for attaching film to greenhouse. Anxious to use them when my film arrives.
I use these to securely fasten the sides on my high tunnel and to create windows in the end walls. I bought the aluminum tube locks for rust-free longevity. However, they are harder to use than the wiggle wire units. I keep a small crowbar (for removal) and a rubber mallet (for installation) nearby.