The loop brackets can be used to attach to existing posts.  They are the send connector found on our PVC posts that we sell

Or if you were cutting down full panels to make new sizes then you can retro fit the hook brackets into the horizontal ends like a professional job. 

FEATURES

• Lightweight, Durable and weatherproof.
• Galvanized Steel then white powder coated
• basic installation tools needed
• Screws included

This is a DIY bracket.  The plastic PVC fencing doesn't come with the order, but we do sell them as well.