Review on Waterproof Plastic Project Box Enclosure - Black ABS IP65 Electrical Junction Box, 3.94 X 2.68 X 1.97 Inches (100X68X50Mm), Pack Of 1 By Zulkit by Andy Tran

I bought these cases to use for an Arduino project with a 1602 LCD / keypad shield. It looked like the inside dimensions were just big enough to let the shield snug in, but nope, the corners of the shield juuust overlap with the case's corner screw lugs. Too bad; it's a great case for the project otherwise. Sturdy, attractive, easy to machine.The Arduino's mounting holes can be made to line up with one or another of the case's internal lugs but not two at once. They don't line up at all if the Arduino is placed all the way to one side of the case (so that power or USB access holes could be made and the Arduino also mounted to one lug).If you have an Arduino project that uses one or even two shields and the shields don't extend out much further than than the Arduino itself, this case could be a good choice. Or a project that will have lights, buttons, or switches mounted to the lid and still have clearance between the dodads' connectors and the Arduino's Dupont connectors, this is a good choice.In terms of being waterproof, sorry, no. The "seal" for the case's lid is a strip of rubber rather than a continuous loop, so it'll leak at the gap where the strip's ends meet. Better than nothing, but more water-resistant-ish than waterproof.