All Phantom Panels are made out of Glass Fiber Reinforced Gypsum (also known as Fiberglass reinforced gypsum). This gypsum material can be called GFRG, GRG, or FRG, which are all synonymous.
GFRG is a material similar to gypsum, used to make sheetrock / gypsum board. The biggest benefit of GFRG is that it has a high strength/density, is lightweight, and can be easily molded to form complex shapes and sizes. To learn more about GFRG you can click here.(javascript:void(0))
Drywall access doors are made from GFRG because it is easily installed into the surrounding sheetrock using compound to mud and tape into place.