Succulents in box planters can be a challenge. Many box planters are placed underneath windows which receive full sun all day long in many instances. This may burn the plants to a crisp in the desert southwest.
In my porch and walkway, I've placed box planters made of coco liner on a long plant stand with two shelves. The stand is made of wrought iron, as is the planter shell. The backside of the planter faces the wall.
These types of planters dry out more quickly, so they must be watered at least twice a week to prevent the soil from drying out completely. Still, be careful to not over water any succulents, which is the easiest way to kill the plants.