I'm installing a new system in a new shop. The shop has 10' ceilings and I am installing the DC pipe first and the lights around it, so I would like to have the DC run as close to the ceiling as possible, if not attached directly to the ceiling. I haven't been able to find very much info on how to do this. I see a lot of info on hanging the duct several inches down from the ceiling, but not a lot on getting it close to the ceiling.

The main reason for this is I want it out of the way and I don't want it blocking ay lighting I have installed. Hopefully someone has done this and can help. Pictures would be so helpful.

Thanks!