The GFC Power Rack is gate-shaped and has no support in the middle, so this is a necessary reinforcement attachment when you want to reinforce the bottom or fix the position of the footprint.
*When installing, if the bolts are tightened too tightly depending on the width between the rack posts, the part may warp and the center may become raised. In this case, this product acts as a washer for the rack support, so insert one of the included washers between this product and the support and secure it with a bolt.