hard wire surge protector

My breaker panel is in a cabinet in my bedroom. There was plenty of room behind it to put my surge guard. I disconnected my 50 amp feed from the breaker and hooked it to the surge guard and wired the surge guard back to the breaker. All done. It was a little more work than this, but still done in an hour and I don't need to hang a $300 piece of equipment out on the power post.