The rigid metal frame holds the paper pots open inside the nursery flat while you fill the paper chain pots with soil. After the soil and seed has been added the frame can be removed, with the soil holding the paper chain pots open.
If your farm is doing a lot of transplanting you may want more than one frame to allow for batch processing and multiple people to fill flats.
The metal rods slide into the sides of the compressed paper chain pots and are used to pull the chain pots apart so you can place them onto the spreader frame. The spreader rods are removed after the paper chain pots are secured on the spreader frame. Without the spreader bars, there is no way to open the paper chains.
Our Paper Pot System Starter Kit includes an opening kit and other seeding equipment, which may be a better choice for more serious paperpot users.