Used the 8x6.5 ring as a retaining ring for solar filter film.
Very good service and nice office.
My tempered glass tabletop broke and I wanted an acrylic replacement for my front porch. The frosted round replacement is great looking and safer because of the wind factor.
We have T&G pine that the carpenter cut out too big for the speakers.
These rings fit perfectly and concealed the gap for a clean look.