In-Situ Aquaculture Aerator Controller Manual - Manual (Page 10)

10 Mounting the Controller
FIGURE 2. Back of enclosure
3.3 ENCLOSURE LOCKING OPTIONS FOR STEEL ENCLOSURES
The steel enclosure can be configured to accept a padlock. On the
enclosure, pull the latch out and place the notched side of the door over the
latch. If you do not wish to use a padlock, push the latch down and replace
the door so that the notched end of the door is at the top of the enclosure.
FIGURE 3. Latch up
9 in (22.9 cm)
14 3/8 in (36.5 cm)