Nautilus/FNS Filter Grid Element 36 Square Feet - 18 Inches D.E. Full Grid pipe-size_12" The wide dynamic flow range

The wide dynamic flow range of 0

Includes two bolt holes for proper mounting

Sold by the foot in 10 foot increments

Choose this model when unusual conditions will not permit use of a standard Figure 4 style

Nautilus/FNS Filter Grid Element 36 Square Feet - 18 Inches D.E. Full Grid pipe-size_12" The wide dynamic flow rangeThis is a Pentair Large Full Grid Assembly, 36 Square Feet, for FNS36 Pool and Spa D. E. Filters, Nautilus NS36 and Nautilus Plus NSP36 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.