About Inside Corner Trim
Inside corner trim is used at locations of two buildings meeting at corners or with interior sheeting with liner panels at each corner.
Top Quality
NOTE: Screws will be required to install. Generally 1’8″ apart color coded metal lap screws are used to secure trim.
https://en.wikipedia.org/wiki/Metal_fabrication
https://www.goconstruct.org/construction-careers/what-jobs-are-right-for-me/steel-erector/
See also Portfolio outdoor lighting and affordable glass