The short side is 12" and is designed to be the side pressed against the wall. It has 6 holes. Each bracket is 3.25" wide approximately. The top extends out 16" and has four holes, two at each end.

This is an open box but unused set.

Would be a nice look for a fireplace or high-load shelves. Because of their strength, they can support a wide variety of uses.

Look is modern but also classic. Will fit a variety of decor/style choices.