This is an Outside wooden corner for crown molding

I did some remodeling and carefully removed this corner piece.

It is painted white with some minor amount of caulk.

There is a small crack at the bottom.  Just a very small amount of wood glue after installation and paint will work.

You can use 4 5/8 inch trim.

Measurements are 7 3/8" by 7 3/8" by 8"