Aladdin Light Adapter Ring With Brass Screws P/N: 500B Adaptable Light Ring will fit any metal or hand formed niche from 9-13/16" to 12-7/8" solving the problem of trying to repair an obsolete light, or trying to reconstruct a niche to fit a standard light. The unique feature of these light rings is that they can be installed in a few minutes and accept a standard light. Simply remove the old light, insert the Adaptable Light Ring, tighten the retaining screws, and install the new light.