The Chief CMA385 Internal Joist Mount solves a common retrofit problem: the spot where the projector or display needs to hang falls between two ceiling joists rather than on one. The mount installs inside the joist bay and extends to bridge the gap, giving you a solid, centered attachment point without adding blocking or relocating the equipment.
Its length adjusts from 14.1 to 22.75 inches, so it can fit a range of joist spacings, and Chief rates it at 300 lbs. The overall profile is just 4.1 inches tall, which helps in tight plenum or attic spaces. It is finished in black and listed by Chief as TAA compliant. The projector mount, column and any ceiling plate are sold separately; confirm joist spacing and structural condition before installation.
Key Features
- Expands 14.1"–22.75" between joists
- 300 lb (136 kg) capacity
- 4.1" (104 mm) tall profile
- Centers the load between framing members
- TAA compliant
Ideal Applications
Conference rooms, classrooms, home theaters and retrofit projects with wood joist ceilings where the ideal projector or display location falls between joists.
Compatibility
Provides an attachment point for Chief projector mounts and extension columns. Fits joist bays within its 14.1"–22.75" adjustment range. Mount and column sold separately.