4" Diameter Round Fixture Support Box For Use With Nonmetallic Sheathed Cable, Works For 3/0 & 4/0 Mounting Size, Bar Length - Contracted: 14-1/2 in, Extended: 21-1/2 in
- Depth: 2 3/8 in
- Mounting: Clamp
- Mounting: Bracket
- Color: Black
- Cubic Inches: 23 in³