Aladdin Adaptable Light Plastic Ring 500P Converts a Light Niche to Accept a Standard Replacement Light. Adaptable Light Ring will fit any metal or hand formed niche from 9-3/4″ to 12″ 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 . It’s that easy. 500P constructed from rugged ABS (plastic) for durability that offers the added benefit of light weight. Adapted for lights: Purex, Wade, Pac Fab, Hayward Starlight, Duralight Series, American Amerlite, Hayward Astrolight Series