This is a bracket for zlx‑12, zlx‑12p, zlx‑12bt, zlx‑15, zlx‑15p & zlx‑15bt.  They were used to hang ZLX-12p on the walls of a gym. Carefully taken off. 

Used but like new condition. May have small scratch but in general the paint looks new.  It will come with one adjustment screw to hold the angle of the speaker.  These are heavy duty iron brackets will hold a speaker solidly on a wall.