Where are wall anchors typically used?

Wall anchors are specifically designed to provide a secure hold in materials that do not offer sufficient support on their own, which often includes porous, non-weldable surfaces. These surfaces can include materials like drywall, plaster, and certain types of masonry that might not be strong enough to handle heavy loads without additional support.

In contrast, drywall often requires specific types of anchors designed for that material, but those are not typically referred to as wall anchors in the same sense. Metal surfaces generally use different fastening techniques, and concrete can provide its own significant structural integrity but often requires specialized anchors if not used with wall anchors meant for other surfaces. Therefore, the correct application of wall anchors in this context is most prevalent in porous, non-weldable surfaces, making this the most appropriate choice.