5 Pcs, 4" Square to Round Device Ring, Flat, .0625 Galvanized Steel Used to Mount Light Fixtures In Walls & Ceiling

4in square to round flat device rings are used to mount light fixtures in walls and ceilings. They convert a square box to a round ceiling or wall opening with 8-32 threaded mounting tabs 2.75in c.c. for ceiling lights or wall sconce lights. The angled slots on the covers compensate for up to 12° of box misalignment on upright framing members.