MINDER "O" series Laminated Filter are the newest & innovatory ,molded of durable ,corrosion-proof ,and Gelcoat smooth finished MINDER "O" series Laminated Filter are the newest innovatory ,molded of durable ,corrosion-proof ,and Gelcoat smooth finished ,which features attractive ,unitized tank construction for years of trouble -free operation with only minimal care .It is the new standard for ...