ProGrid DE7220 Filter Grid Element 72 Square Feet - 36 Inches Full D.E. Grid monitors_pH is printed on heavy-duty aluminum

is printed on heavy-duty aluminum material and is designed to inform patrons that the restroom is closed for cleaning

a filter area of 21

This white ring buoy is 24 inches in diameter

A heat shield protects the cover from ballast heat

ProGrid DE7220 Filter Grid Element 72 Square Feet - 36 Inches Full D.E. Grid monitors_pH is printed on heavy-duty aluminumThis is a Hayward Replacement Full Filter Grid Element for ProGrid Vertical Grid DE Series DE7220 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.