Royalite®R57 thermoplastic sheet is a fire-rated, rigid, ABS/PVC product specifically developed to meet Federal Aviation Administration requirements. It passes FAR 25.853b at 0.047″ and above. It is lightweight material with very high impact strength, high tensile strength and stiffness, as well as excellent formability and ductility. Applications Include: Small aircraft needs, such as Tray Tables and Armrests in smaller commuter and private airplanes as well as Interior Ceiling and Side Panels in many helicopters. Royalite R57 is Custom-Run Made-To-Order Product. Although Professional Plastics commonly stocks this material in certain sizes and thicknesses, all orders are subject to inventory verification at the time of order. If an item is not in stock at the time of order, Professional Plastics reserves the right to refuse orders that do not meet the factory minimum. If you wish to confirm inventory prior to placing your order, please call (888) 995-7767 to speak with a sales representative.