Garvin 52C4-5/8 4" Square to Octagon Device Ring, 5/8" Raised

4 in square to octagon 5/8 in raised device rings are used to mount light fixtures in walls and ceilings. They convert a square box to a 4in octagon opening with 8-32 threaded mounting tabs 3.50 in c.c. for lighting retrofit applications. Octagon design allows additional space for led drivers that do not fit in traditional square to round rings. The angled slots on the covers compensate for up to 12 degrees of box misalignment on upright framing members.