Purex SM-SMBW 4060 Compatible Filter Grid Element 60 Square Feet - 30 Inches filter-width_null inches Two square 9/16 x 9/16

Two square 9/16 x 9/16 inch holes on center distance of 12 inches

They are available in cases of 25

The Internal Cam Lock has a unique cam plug that has been placed into the inside pole

The Chemtrol PC7100-UV includes the new PPM sensor for true monitoring and control of Free Chlorine

When the magnet passes through the Alarm Trigger Zone (Hysteresis) of the Flow Sensor Accessory (F-300S sold separately)

Purex SM-SMBW 4060 Compatible Filter Grid Element 60 Square Feet - 30 Inches filter-width_null inches Two square 9/16 x 9/16This is a Purex SM SMBW 2060 4060 Compatible Filter Grid Element 60 Square Feet, 30 Inches, Full Vertical DE Replacement Grid. Our generic OEM 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 over OEM units.