I installed a box next to my panel, since the panel didn’t have room for all the devices.  This box holds the CT (bottom left) and the MTU. I purchased the box and the correction blocks at Home Depot.

I installed a box next to my panel, since the panel didn’t have room for all the devices. This box holds the CT (bottom left) and the MTU. I purchased the box and the correction blocks at Home Depot. (Michael South)