Use these stud-style anchors with nuts. A spring-loaded toggle holds against the back of the material. To install, insert the bolt through your fixture and thread the toggle onto it. Next, fold the toggle wings flush against the bolt and push them through a drilled hole until they pop open on the other side. Pull back on the bolt and tighten. All are zinc-plated steel to resist corrosion in wet environments. Bolts are reusable, but the toggle will fall behind the wall when the bolt is removed.

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