This Standard establishes performance criteria for whirlpool and air-jetted bathtub appliances and suction fittings used in whirlpool bathtub appliances. It is intended for use by, but not limited to: manufacturers, distributors, retailers, architects, engineers, plumbing contractors, jetters, installers, regulatory agencies, and users. This Standard shall govern the construction, general requirements, test methods, and marking for whirlpool and air-jetted bathtub appliances that incorporate a bathtub, a circulation pump, and a piping system, with or without the introduction of air, either by integral suction or air pump. Optional accessories for such appliances shall be permitted to be provided in the factory or field, provided that such accesories do not negate the performance of whirlpool hydromassage bathtub appliances designed to comply with this Standard. Suction fittings that are used within whirlpool bathtub appliances shall be evaluated to this Standard. The provisions of this Standard shall enable identification of specific units that are in compliance with this document. The provisions of this Standard shall not be construed to prevent the use of any alternate material or method of construction, provided any such alternate meets the intent of this Standard.