172mm X 172mm X 76mm
These very high quality plastic enclosures are 100 percent weather resistant, UV resistant, and can be used outside for virtually any electrical project.
Nominal Dimensions are 6 3/4" by 6 3/4" by 3" high (172mm X 172mm X 76mm)
The mounting holes are under the large white plastic screws and are outside of the protected area, keeping your enclosed electronics nice and dry in any condition.
There are 3 knockouts on each side. 2 opposing sides have knockouts for 15mm and 20mm connectors (1/2") and the other 2 opposing sides have knockouts for 22mm and 28mm connectors (3/4").
There are also 4 knockouts on the bottom for 20mm (1/2") connectors.
This plastic is very durable, flame resistant, UV resistant, and thus fairly brittle. We recommend using either a stepper bit or hole saw for drilling holes the size that you need. Paddle bits don't work well on this plastic either.
There's a rubber seal around the clear plastic lid. The mounting holes are pre-drilled and sit inside the holes where the plastic screws connect into the bottom. The boxes are UL listed and are made of UV resistant plastic.
The drawings show 2 holes pre-drilled in one side of the box. IGNORE THOSE SPECS as they are incorrect and there are no holes predrilled in the sides.