4 Port MC4 Solar Panel Weatherproof Cable Wire Entry Housing, 5 FT

Appears 3D printed, but very solid. I used screws to mount it, along with some butyl tape and dicor, but if you are planning to use adhesive, be warned, the flange is not very wide. Would have preferred cables with thinner/more strands as to be more flexible, they are a little bit stiffer than I like, especially since they need to make a fairly sharp bend down through the roof. MC4 connectors seem high quality and while I haven't seen any rain yet, appears to be solidly sealed to the box. I didn't need/want whatever connectors the cables are terminated with, and only needed about 16 inches of the cables, but I suspect 5 feet will be a little short for some people's installs. Still giving 5 stars because it was just about perfect for my install and nothing really worth taking a star off for, but there are a few improvements that could be made.