I ordered this breaker and box combo mostly because the box was sized right as my solar is limited in space.The enclosure is too small to use the weather seals and service the breaker. Basically once the seals are clamped down the breaker can't move cuz there is no slack in the wires...My box is out of the elements so I left off the weather seals. If that's ok with you, the box is sufficient for enclosing a dual pole breaker.Bigger problem is that I broke the breaker by tightening the screw too much. It then gave me intermittent power and a HEADACHE as I tried to troubleshoot my new solar setup.Buyer beware: don't tighten screws too hard!The picture shows the "repairs" I had to make while on the road to try to get the breaker working again.Had to replace breaker but am still using box. Haven't seen any other boxes this size on Amazon.