Pentair Clean & Clear Plus 520 Cartridges 4-Pack 179136Pentair Clean & Clear Plus 520 Cartridges 4 Pack 179136 Branding and Packaging Disclaimer: Due to Pentair's acquisition of Pleatco, filter cartridges may arrive with Pentair branding, Pleatco branding, both Pentair and Pleatco branding, or packaging product labeling that shows neither name. Branding, labels, and packaging may vary from what is pictured on our website. This does not necessarily indicate that the item is different from what was ordered.