Shutter dogs have nothing to do with pets despite the name. They are the small S-shaped iron fasteners that hold a working exterior shutter flat against the wall so it does not bang in the wind, and choosing them comes down to material, finish, and how many you need. Each shutter typically needs one or two holdbacks, so pack count matters as much as quality. We compared decorative S-style sets in different finishes and a cast iron option, looking at how the holdback actually grips and pivots, whether the finish resists rust outdoors, and how the mounting hardware is included. Cast iron has a traditional look and real heft, but any exterior piece lives or dies by its coating, since untreated metal streaks rust down your siding within a season. We also weighed the screws and anchors that come in the box, because a beautiful shutter dog is useless if you have to source separate fasteners. Measure your shutters and count your windows first, then buy a pack size that covers them with a spare or two. The right finish should match your existing exterior hardware.

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