I really love these enclosures and pcb's. They are a perfect combination. No space is lost. The pcb fits perfect, not 1mm leftover, even below the pcb is only 2 or 3 mm I guess so more space above for extra components or extra pcb's with spacers. I also love the fact there is not only two rows like a standard breadboard, but it has two extra rows. So, way more space to put extra components. And the fact you can use two different powersources selected with 2 jumpers. And finally I found a board with the special 2mm Grove connectors, the left and right rows with Grove connectors follow the same jumpers for the power! And the board has a Enig surface, so it will not corrode over time. And the case is waterproof with cable glands. And Dave the designer of this wonderful board asks me kindly what could be improved. And I also asked for sending with Fedex with extra payment of course. No problem, Dave replied me always instantly and in less than 2 weeks it arrived in the South of the Philippines. And the documentation with the Schematic are clear, only to figure out how the jumpers for power work towards the Grove connectors is not that clear at first, maybe a small improvement to make that more visible in text layer. So, no negative comments here. Dave thx again, this product I was actually waiting for years, I still wonder why nobody made something like this before you.