?Muy buena calidad.These seem a bit over priced for what they are, but it works good.A good Combiner even if a little tight when using large cables. Very nice lookingEasy installationMuy adecuado para uso exteriorI have 3 total Midnitesolar combiner boxes 1- 3 space and 2 - 6 space. Easy to use and wire, a must for any off grid solar project.Terrible quality. The nut on the back as well as the rivets used to mount components (yes, they used cheap rivets instead of a screws to save a few pennies) protrudes beyond the standoffs for the mounting and cause it to be bowed upon installing. I contacted the company and was told that it is fine as it is. Well it's anything but fine, it's not even acceptable and the arrogance of the company is second to none.