Pro-Grid™ vertical grid D.E. filters provide superior water clarity, efficient flow and large cleaning capacity for pools and spas of all types and sizes. Constructed with high-strength reinforced thermoplastic, Pro-Grid combines high-technology features and "service-ease" design for an unparalleled filtration value for both new pool and aftermarket installations.
In addition, Pro-Grid delivers low maintenance and dependable operation.

Features:

Reinforced thermoplastic filter tanks constructed from durable glass reinforced copolymer to meet the demands of the toughest applications and environmental conditions, including in-floor cleaning systems
Self-Aligned tank top and bottom make access to servicing the grid elements fast and simple
Heavy-duty, tamper-proof one-piece flange clamp securely fastens tank top and bottom, allowing for quick access to all internal components without disturbing piping or connections
High impact grid elements designed for up-flow filtration and top-down backwashing for maximum efficiency
Integral lift handles and uniform low-profile base make removal of grid nest fast and simple
Inlet diffuser elbow distributes flow of unfiltered water evenly to all filter elements and provides even distribution of D.E. to grids
Made of reinforced thermoplastic. Allows for both commercial and large residential applications and years of non-corrosive, trouble-free performance
New High capacity, rapid release manual air relief valve bleeds air with a quick quarter turn of the lever
 

The 3620 is recommended for 16'x32' pools, the 4820 is recommended for 18'x36' pools, the 6020 is recommended for pools 20'x40'. Don't forget the Multiport valve !! (Sold Separately)