Chief CMA165 Internal Joist Ceiling Kit

Product ID 16906
Chief CMA165 Internal Joist Ceiling Kit
Chief CMA165 Internal Joist Ceiling Kit

Chief CMA 165 Internal Joist Junction Box Structural Adapter Silver


Chief's CMA165 Junction Box Adapter makes finished or new construction home projector installations quick and easy.


Technical Drawing

Technical Drawing for Chief CMA165 Internal Joist Junction Box Structural Adapter






16.0" - 24"

Overall Dimensions (H x W x D)

6.0" x 5.0" x 24.0" (152 x 127 x 610 mm)

Shipping Weight

4.00 lbs

Weight Capacity

50 lbs (22.7 kg)



  • With just a 4" hole in the ceiling, you can install a projector by suspending it between ceiling joists

  • Includes junction box mounting brace and a 5" round plate that adapts to 1.5" NPT extension columns

  • Installation is similar to that for ceiling fans

  • The ceiling plate mates with a standard fan mounting junction box

  • Expands to fit 16" or 24" joist spacing


Product Options/Accessories

Model CMA165
Manufacturer Chief Mounts
Part Number CMA165
UPC 841872038544
Color Silver
Extension 16.0" - 24"
Overall Dimensions 6.0" x 5.0" x 24.0" (152 x 127 x 610 mm)
Weight Capacity 50 lbs (22.7 kg)
Shipping Weight 4.00 lbs

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With the exception of electrical products, Chief warrants its products to be free of defects in material and workmanship for 10 years. All warranties are in effect beginning the date the product was invoiced by Chief. Electrical mechanisms (such as lift products) have a 1-year limited warranty. All warranties are in effect for the original purchaser only. Chief disclaims liability for any modifications, improper installation and/or installations over the specified weight capacity. Chief also disclaims liability for any modifications made to electrical mechanisms, improper installation, incorrect voltage connection and/or installations over the stated weight capacity. All Electrical Mechanisms are intended for indoor use only and failure to comply will void warranty.

Chief's sole warranty obligation to the owner of its products is to repair or replace (at Chief's discretion) defective products at no charge to the original purchaser within the warranty period. The purchaser is responsible for returning the product to Chief Manufacturing via prepaid shipping. To the maximum extent permitted by applicable law, Chief disclaims any other warranties, express or implied, including warranties of fitness for a particular purpose and warranties of merchantability. Chief will not be liable for any damages whatsoever arising out of the use or inability to use Chief products, even if Chief has been advised of the possibility of such damages. Chief bears no responsibility for incidental or consequential damages. This includes, but is not limited to, any labor charges for the repair of Chief products performed by someone other than a Chief employee. Because some states and jurisdictions do not allow the exclusion or limitation of liability for consequential or incidental damages, the above limitation may not apply. Chief will not be responsible for damage to Chief products caused by misuse, abuse, failure to properly package the product for return to Chief or for damage caused by carriers during shipment to or from Chief. Any repairs to Chief products required due to misuse, abuse or shipping damage or repairs of defective Chief product outside the warranty period will be performed at the current rates established by Chief for factory service.