Hi Ghumphre; So sorry I missed your message that was dated 9-23-19. I forget to look under those notifications. You might have replaced your skylight by now but I still have not gotten around to doing anything with mine. The sizes other owners here who have replaced their neo angled skylights over the shower are close to my dimensions but still far enough different that I don't think they are the same. If I come up with anything I will post it on the forum. Again, sorry about the extremely late reply.