Nautilus/FNS Filter Grid Element 24 Square Feet - 12 Inches D.E. Full Grid size-in-gallons_51-100 Regardless if you use the

Regardless if you use the leafing edge or the rounded edge of the protective tubing

Aluminum (No

This Storage Room aluminum sign measures 10 x 12 inches

The pH control level can be adjusted from 6

Nautilus/FNS Filter Grid Element 24 Square Feet - 12 Inches D.E. Full Grid size-in-gallons_51-100 Regardless if you use theThis is a Pentair Large Full Grid Assembly for FNS24 Pool and Spa D. E. Filter, Nautilus NS24 and Nautilus Plus NSP24 Pool and Spa D. E. Filters. These grids are injection molded from 100% virgin, high impact styrene then covered with multi filament polypropylene fabric. Each grid has been engineered with subtle design improvements specifically for this model and manufacturer.