Hey all, I got a 28k plaster unground pool with 2 Hayward lights. One in the deep end which is the Hayward Astrolite W3SP0583L100. And another almost identical one in the spa, same exact faceplate pattern and all, just scaled down, maybe 3 inches? It never worked since we moved in but I thought I’d take a look at it. It’s half filled with water and all model numbers or any writing for that matter is long gone. Anyone able to help me identify it so I can purchase a gasket? If not, are these niches standard? Is there a drop in replacement for this thing? Thank you.