
When I opened the case I noticed all traces of plastic scrap inside which was most likely the result of factory drilling. into the body to create holes. I think the manufacturer never bothered to remove it. So I conclude that this is a very cheap product with no quality control. The terminal plan included in the kit cannot be attached to the mounting thread of the box either, because. Entire portions of the diagram do not match entire fastener threads. So it's basically a cheap $10 plastic box. You'll find better there.