I am an Audiovisual Design Engineer. I had to mount pendant speakers above a drop ceiling with the bottom of the speaker's level with the bottom of the drop ceiling. I found the Goof Rings offered by 1800Ceiling after a quick search on the internet. I ordered seven custom size rings to cover the cut holes in the ceilings. They worked out perfect! Not for lights but for speakers.
These lenses were exactly what we needed for replacement. They arrived well-packaged and fit our lights perfectly. Easy to install.
Product worked great and fast delivery
Was easy to order. Is the exact measurements we wants as far as the OD and ID.