... .Material:Stainless steel mesh,Glass fiber,Filter paper return filter cartridge Model Description2.1. GU-H With Check Valve Pressure Line ... ,3,5,10,20,30 separately)2.4 .XU-A Return Filter Series Cartridge Filter ModelTXX-25×* TXX-40×* TXX-63×* TXX ... SeriesCartridge Filter modelTFBX-45×* TFBX-70×* (* stands for 10,20,30,80 separately) 2.12. XNLTank Mounted Return Filter Cartridge Filter ModelNLX ...