Tin Ceiling Tiles. Diamond Tin Ceiling Panels: One of the most popular historical geometric tin ceiling tiles, it can be used for nail-up or drop-in ceilings, or even as a backsplash. Tin is rust-resistant, low maintenance & acts as a fire retardant, a safety feature for all homes. It can be painted to match any décor or left as is. Match it with our Filler Panels #19219 to bridge the gap between field panels & the ceiling perimeter or cornice perimeter. Measures 2 feet by 2 feet in addition to a ¼ inch lip all around for overlapping.