Read the complete product technical record
Start with the job: The CHA 34HD REDUCER KIT is the missing mechanical interface between the narrower CFM-34HD base and the 3-inch CHA PORTA-MOUNT family. It keeps the mast centered and supported instead of letting a high-leverage field system ride loosely in an oversized mount.
Why this part earns its place
- Use it only for the documented CFM-34HD to PORTA-MOUNT path.
- The current kit uses an upper two-piece sleeve, a lower stabilizer, stainless hardware, and the mast protective/bottom cap identified in the mast guide.
- Choose the PORTA-MOUNT separately for the actual vehicle or structure.
- The reducer does not increase the mast load, height, or wind rating.
What a complete deployment includes
- Seat the lower support sleeve fully with the protective cap at the mast base.
- Align the two upper halves and tighten the supplied hardware only until snug.
- Insert the assembly into the 3-inch mount with the upper flange flush to the mount.
- Verify that the mast cannot rock or pull sideways before raising it.
Compatibility that matters
- The approved relationship is CFM-34HD plus the complete current reducer/sleeve kit plus a compatible CHA PORTA-MOUNT.
- It is not a general reducer for unrelated masts.
- A similar diameter does not prove structural approval.
- Every mast-specific antenna, extension, and guying limit remains in force.
Field safety and recovery
- Do not raise a mast if either sleeve is missing, loose, cracked, or not fully seated.
- Do not overtighten and deform the mast.
- Control the fall zone and use the required guying.
- Lower the mast before removing the reducer or mount restraint.
- Inspect sleeve halves, lower stabilizer, protective cap, flange, and hardware.
- Remove grit from every mating surface.
Use the current CHA 34HD REDUCER KIT instructions.
Open CFM34HD_3_Inch_Reducer_Sleeve_Quick_Start_260716.pdf · Open the product page
