Monarch Poolrite Spa-Quip 50 Replacement Cartridge Filter Element
Has an open hole at both ends.
Used as a replacement element for:
Aquaswim AQ50
Astral/Hurlcon QX50
Monarch Pool Ecopure 50
Pantera PCF50
Poolrite Enduro EC50
Quiptron 464
Davey/Spa-Quip Series 2000 C50
Stroud P4 CF50
Same dimensions as FC-FAA319 however has a lower pleat count.