RSMC339 - Projector Accessories Chief - Free user manual and instructions
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| Product Type | Projector Ceiling Mount |
| Brand | Chief |
| Model | RSMC339 |
| Category | Projector Accessories |
| Intended Use | Secure mounting of a projector to a ceiling |
| Mount Type | Ceiling plate with adjustable extension column |
| Compatibility | Projectors up to 25 lb with standard mounting-hole patterns |
| Maximum Load Capacity | 25 lb (11.3 kg) |
| Material | Reinforced steel and aluminum alloy |
| Finish | Powder-coated matte black |
| Dimensions (L x W x H) | 14.0 x 9.5 x 3.2 in (356 x 241 x 81 mm) |
| Net Weight | 4.6 lb (2.1 kg) |
| Tilt Adjustment | ±15° |
| Roll Adjustment | ±3° |
| Yaw / Rotation | 360° |
| Height Range Above Ceiling | 12 – 20 in (305 – 508 mm) |
| Cable Management | Integrated wire channels and clamp |
| Installation Method | Ceiling-mounted with adapter plate and safety tether |
| Assembly Required | Yes; toolkit and hardware included |
| Safety Features | Anti-theft screws and locking knob |
| Maintenance and Cleaning | Wipe with dry cloth; inspect screws periodically |
| Included Accessories | Mounting bracket, adapter plate, bolts, Allen wrench |
| Warranty | Limited 5-year warranty |
| Certifications | UL Listed (US/Canada) |
Frequently Asked Questions - RSMC339 Chief
What is the Chief RSMC339 used for?
The Chief RSMC339 is a projector ceiling mount designed for secure, low-profile installation of projectors in meeting rooms, classrooms, and home theaters.
Is the RSMC339 compatible with my projector?
Check your projector’s weight and mounting-hole spacing. The RSMC339 supports projectors up to 25 lb (11.3 kg) and fits standard VESA-style patterns such as 100×100, 200×100, or 300×300 mm with the included adapter plate.
How do I install the Chief RSMC339?
Install the ceiling plate into a structural ceiling beam using the provided lag bolts. Attach the adapter plate to the projector, then hang the projector onto the mount column. Tighten the tilt, roll, and yaw locks to secure the image alignment.
What tools are needed for installation?
The mount comes with an Allen wrench and mounting hardware. For ceiling installation you will also need a drill, a stud finder, and a screwdriver to locate joists and pre-drill pilot holes.
Can I adjust the projector after installation?
Yes, the RSMC339 allows ±15° tilt, ±3° roll, and 360° rotation. Loosen the adjustment knobs, position the projector for the perfect image, then re-tighten all locks.
How much ceiling height is required?
The adjustable column extends from 12 to 20 inches below the ceiling. This is suitable for most rooms with 8 to 10 ft ceilings. Verify your projector’s throw distance to choose the final height.
Does the RSMC339 hide cables?
Yes, the mount includes integrated cable management channels that route HDMI, power, and other cables through the column and ceiling plate, keeping the installation clean and clutter-free.
How should I maintain and clean the mount?
Wipe the mount with a dry microfiber cloth to remove dust. Periodically inspect the mounting screws and locking knobs for tightness. Avoid using abrasive or liquid cleaners that could damage the black finish.
Is the mount secure against theft?
The RSMC339 includes anti-theft screws and a locking knob that help prevent unauthorized removal of the projector. For additional security, you can use standard tamper-resistant Torx bits and a cable lock.
What warranty does Chief provide for the RSMC339?
Chief offers a limited 5-year warranty covering defects in materials and workmanship. Keep your purchase receipt, and contact Chief support with the model number and serial number for any service requests.
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USER MANUAL RSMC339 Chief
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Product information
Brand : Chief
Model : RSMC339
Category : Projector Accessories