6Common System Components...ENCT-RING .............................................. Filtration Tank Retaining RingENCT-PRC................................................. Filtration Tank Pressure Relief CapENCT-TANK-C ........................................ 8 x 40 Cartridge Tank EnclosureResidential System Components (Bottom of Tank)ENCT-2.5IC-HF ...................................... Filtration Tank Inlet Cap - 2-1/2”ENCT-2.5 ADAPTOR-HF.................. Filtration Tank Adaptor - 2-1/2”ENCT-DRAIN1-1/4-HF ...................... Filtration Tank Drain 1-1/4”Commercial Plus System (Bottom of Tank)ENCT-4.5IC-HF-PLUS........................ Filtration Tank Inlet Cap - 4-1/2”ENCT-4.5 ADAPTOR-HF-PLUS ... Filtration Tank Adaptor - 4-1/2”ENCT-DRAIN2-HF-PLUS................. Filtration Tank Drain 2”System ComponentsADGBEHCFJ©2013 Nelsen Corporation — NFS MANUAL — 010713