Now that you've built the frame and are waiting for the cement to cure, you can setup the net. You can use an old badminton net that you have lying around. Most likely, you'll have to cut it to length. I hastily bought some netting from a local shop. I think I got ripped off, but I wasn't in a position to haggle since I only had 2 days left to assemble it.
I used nylon string to make the top, bottom, and sides more ridged and cable ties to tie the string to the net.
On the top PVC caps, I drilled a small hole to run the string through. The top PVC caps are not glued to the frame to allow easy removal of the net when necessary.