... string filter cartridge media : PP( Polypropylene), cotton; 2. length: 5'', 10'', 20'', 30'', 40'' ; 1. micron filter length : 10'',20'', 30'',40'';2. wound string filter cartridge media: pp ... outside diameter : 55cm, 61cm, 63cm, 65cm;7. max temperature : pp (60°C) , cotton (120°C);8. features : a. fits ... layers offers effective depth filtration; d. various filter media fit with various applications.