Chief Extension Columns - Fixed & Adjustable (grey highlight) Remember - the RPA/ RPA-U mounts add 1.75" in height from the top of the projector base RPA Projector bracket for this column? Link here Ceiling brackets for this column? Link here All Chief Mounts, ceiling brackets, and columns use 1 7/8" OD threaded pipe (1.5" NPT) | Specify standard black, white, or silver column in the comments area of our order check-out form. If you do not specify a color - Your online order will be filled with the black extension column. Thank you 
| Cheif # | | Description | | CMA-003 |
| Fixed Extension Column – 3” Length | | CMA-006 |
| Fixed Extension Column – 6” Length | | CMA-008 |
| Fixed Extension Column – 8" Length | | CMA-012 |
| Fixed Extension Column – 12" Length | | CMA-018 |
| Fixed Extension Column – 18” Length | | CMA-006009 |
| 6” – 9” Adjustable Extension Column | | CMA-009012 |
| 9” – 12” Adjustable Extension Column | | CMA-012018 |
| 12” – 18” Adjustable Extension Column | | CMA-018024 |
| 18” – 24” Adjustable Extension Column |
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