Our 53 year old pool has a 9.5 inch wall cuttout that the old light has corroded away. It says "Amerilite" on the inside of the ring of the old light can. I saw a post a year or two back where someone else had a 9.5 inch opening and you indicated that the Hayward Universal Colorlogic would fit. All I see on the site for Hayward now though are spa lights
I would like to go with color LED.