Boshart Industries polyester pleated filters are suited for a variety of uses and can be used in residential, commercial and industrial applications. The non-woven polyester filter media is pleated around a polypropylene core for added strength and stability. The pleated surface area provides greater sediment and dirt holding capacity while maintaining flow rate and reducing initial pressure drop. These cartridges can be cleaned and reused in most applications and micron ratings. The flow rates listed are based on their maximum efficiency. They can be used with flow rates above what is listed but will not filter as effectively.