conduit straps - not true greenhouse pipe strap
This really isn't what you want for serious greenhouses; it's just regular conduit pipe strap designed for EMT. It's a little harder to find the heavy duty stuff, but as a serious farmer that does 4 season growing with numerous high tunnels, this just had to be sent right back. It's the same stuff that box stores sell, but for more money. Not recommended at all; buy at your own risk.