Panel Fret Square Metal Sign

About the Fret Square design

White L-shaped slots hook around one another across this panel, turning in quarter steps like the arms of a pinwheel. Four tiny white squares mark the hubs, one centered in each quarter, so the whole field becomes a single spiraling tile repeated two across and two down. Between the slots, the black steel runs as an unbroken maze of narrow corridors. A solid black border holds everything in, and the outer hooks stop square against it without breaking through.