On Feb 20, 9:52*pm, Nate Nagel wrote:
Does anyone make an extension ring rated for hanging ceiling fans?

snip

IMHO you'll do better with new boxes made for the job. The favorite in
our area is the FASCO 925 box. Comes complete with lag screws, long
studs installed, etc. Nice rugged octagonal with romex clamps. I use
it with a 2 x 4 between joists to get an accurate position relative to
the drywall because the metal brackets never seem to work quite right.
HTH

Joe