Bought 5 of these - to coiled excess Fiber Optic Cable at certain points during 200 to 300ft cable runs. box is just bare inside, but this gives you room to add a hook or some other method to coil cable inside..... or whatever else you want/need to do. sturdy enough to protect. And the fact that it is plastic, makes it a little easier to drill out the holes in the sides for conduit, or make your own where you need to.

A good project box. I purchased the 12X12X4 box. The dimensions are outside dimensions with the sides being 1/8 inch thick so 1/4 inch less on the inside. The hinge makes the box larger outside as mentioned in other reviews with the outside lid dimensions being 12.5X13. I purchased the one without the stand off tray but it appears to be the same box, just without the extra piece of plastic, and has four stand off posts inside in each corner. There are also two mounting holes in each of the corners which have raised lips around them so the inside rear of the box is not completely flat. The posts and raised lips could be in the way if you need a flat mounting surface and plan to use all the space in the corners although they could be ground down.
The door has a slight overlap on the outside of the box of about 1/2 inch so the outside space on the three sides without the hinge is about 3.5 inches. This limits anything being mounted through the side walls in that area that would protrude unless you cut the door overlap. Hinge side wall is about 2.5 inches before it steps back the extra 1/2 inch for the hinge.

Well designed and priced right. Using for a remote WiFi setup. Only concern is be very careful with knockouts. I used a tapered routing bit to open them up. Trying to knock them out may break the cabinet.

Great project box for Raspberry Pi. It has plenty of room for power supplies and relays.

Great price on these awesome enclosures, these are priced quite a bit lower than the big name hardware stores. I am using them in a backup Solar panel/battery setup I use one for the charge controller and the other for switches and meters.
They are weather resistant, meaning if you spray them with the garden hose, you may have a problem, they are, as stated, non-metallic so the potential for shorts is greatly decreased. I bought two of them and couldn't be happier with the purchase, I will buy more of this same item as need dictates.
Let me know if you found my review "Helpful" or if you have any questions.
Thanks!