Chief CMA385 Internal Joist Mount -
The Chief CMA-385 Internal Joist Mount expands to bridge ceiling joists on 10-23" centers. The CMA-385 has a clamping bracket that adjusts from 8.50-21.50" and has a threaded fitting that accepts a 1-1/2" NPT threaded extension column.
- Adjustable clamping bracket has threaded fitting to accept 1.5" NPT threaded extension column
- Expands to bridge ceiling joists and transition to vertical extension column Joist Width:10-23" (254-584 mm)