4 x 2.8 x 2.4 inches

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Sign Standoff is a kind of wall mounting hardware kit engineered to support panels of wood, acrylic, plexiglass, aluminum, glass or any other messaging display substrate, and also used to support glass tabletops on wooden bases.
Designers often use it to DIY a simple and attractive acrylic sign, install a modern dry erase board on the wall, hang a glass painting or artwork on the wall.