This is the solid bottom plate for HyperFloss 13 inch frame. It doesn't has the 3 big holes, so it's heavier than the regular version (but stronger and cheaper).

Each frame needs two of this, one above and one bellow the arms.

This plates can be used in two different ways: To mount the "Floating" pod, or to directly mount the electronics.

The "Floating" pod is a small structure mounted using rubber standoffs. It's intended to provide a vibration dampered space for the electronics. It also provides more space for electronics.

It's optional and you can mount the electronics directly on this bottom plate if you don't need dampering or more space for electronics.