54171-LB - 2 1/8 DEEPS CEILING OCTAGON BOX W/SIDE MOUNT BRACKET, W/CLAMPS

2 1/8'' Deep, 21.0 CU. IN.
Side Bracket has holding prongs & position depth tabs.
2 x 1/2” knockouts (1 on bottom, 1 on side).
Nonmetallic cable clamps.