On shingle roofs we use the popular SolaDeck junction boxes. However, on tile, flat, and metal roofs we generally have been using Kraloy JBX666 or JBX664 boxes where needed on roofs. An inspector for Hillsborough county, FL mentioned that junction boxes and enclosures need to be "solar rated" in order to pass inspection. I asked him what made a box "solar rated" like a certain UV/UL/NEMA rating, but I think believe he just wants us to use junction boxes that are designed and meant for use on solar PV projects. Our installers prefer the dimensions of a 6x6x6/4 box, so I'm trying to find a brand that is comparable in size while still explicitly stated they are meant for solar PV arrays. Does anyone have recommendations for a box?