#3 Post Stacker Street Sign Mounting Hardware, fits over 3" O.D. post, black finish, used for post top mounting of street sign blades up to 0.25" thickness.
Recommended for street-blade sizes: 16"-30" width.
Signature Streetscapes Street Sign Blades Post Top Mounting
Fits a 3" diameter post. Solid cast aluminum with a powder coat finish and set screw mounting. Holds both flat and extruded street blade signs up to 0.25" thickness.