Nautilus NS72 Filter Grid - 72 Square Feet - 36 Inches filter-length_32 7/8 inches This is a PVC Reducer

This is a PVC Reducer Bushing with Spigot x Socket fitting connections that measure 6 x 5 Inches

heavy-gauge 316 stainless steel rim

This is a Pentair Replacement O-Ring for Check Valve Screw Cap

Smith MultiLift

Hardware is included: 3/8 inch x 2-3/4 inch bolts and hex nuts

Nautilus NS72 Filter Grid - 72 Square Feet - 36 Inches filter-length_32 7/8 inches This is a PVC ReducerThis is a Pentair Full Size 36 inch covered filter grid, 72 square feet, for the Nautilus and Nautilus Plus filters. This grid is sold individually. Seven (7) are required if you are replacing all in your pool filter. Pentair filter 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