Is there an octagonal box extender that's slimmer than 1 1/2" deep? So far I haven't been able to find one.
Here's why: to cover up 30 years of patching on one of my plaster and lath ceilings, I'm considering covering the entire ceiling with 3/8" drywall, but that solution will leave two electrical boxes sunken into the new ceiling. I could re-mount the boxes deeper into the ceiling and use a 1 1/2" box extender, or I could replace my boxes with deeper ones, but it'd be easier if I could just affix a slim box extender and be done with the job.
Does anyone make a skinny box extender?