These enclosure boxes are made from heavy-duty UV rated non-metallic material. They are available in 3 sizes. They are lockable. They have a 1/2" and 3/4" knockout on the bottom and top of the enclosure box.
There is also an additional knockout on the front of the box for an additional cam lock. And a latch that accommodates a padlock.
The optional cam lock is sold separately under part #HW177-4.
This cam lock works with the enclosure boxes under part #HW177-1, HW177-2, & HW177-3.