... 316 1. cartrige filter housing material : Stainless steel 2. length :10 '', 20' 1. the cartridge filter housing material : SS304 ... ,SS316,SS316L2. suitble filter cartridge:1piece,2 pieces,3peices, 5ieces,7pieces ... ,11pieces,13pieces,15pieces3.Length of micron cartridge filter : 10inch, 20inch, 30inch,40inch4.seal material: PTFE5. ...