This abbreviation stands for “fiberglass reinforced panels”, which are commonly used on walls and ceilings in public and company restrooms, kitchens and serving areas, and any other wet areas that must stay sanitary as per building codes. Available in both smooth and textured surfaces, they are easy to clean and maintain, water-resistant, light in weight, and very cost-effective to install compared to tile applications. Trim pieces are also available to finish off a complete installation.