Apr 29, 2019 - 08:04 AM
Unfortunately, that information is not stated on our dimensional diagram. I have reached out to the manufacturer with no response just yet. I do know that the Dura Faucet Shower Slide bar on the DF-SA300CL-SN was made to hold the Dura Faucet shower heads but I do not know that exact measurement. I will get back to you with any information as soon as I receive it.
May 02, 2019 - 05:38 AM
The upper is 0.94” and the lower is 0.84” which will hold all of the Dura Faucet shower heads.