What are "nail-on" boxes designed for?

Nail-on boxes are specifically designed to be attached directly to framing members using nails, making them a practical choice for new construction. These boxes typically have flanges or tabs that allow for easy nailing to wooden studs or other framing elements. This approach ensures a secure installation and simplifies the wiring process as the box is firmly anchored in place.

While nail-on boxes may be used in various installation scenarios, the primary function is the efficient attachment to framing, which differentiates them from other types of electrical boxes that may serve different purposes. For example, some boxes might be designed to mount to ceilings or conceal wiring, but those features do not encapsulate the primary design intent of nail-on boxes. Waterproofing is also not a characteristic associated with these types of boxes, which could lead to potential issues if moisture is a concern.