True Spiral Laminar flow in an above ground filter, Spiral Laminar flow ensures even distribution of D.E. for maximum filtration. The ClearWater D.E. filter features automatic regeneration, Waterway’s Safety Lock Ring system for safe operation and maintenance, and a ten year warranty on its rugged glass-filled polymer body. FEATURES: · True Spiral Laminar flow for even disbursement of D.E. · Automatic hydraulic regeneration · High flow rate · 1 ˝” FPT Model has a built in check valve to prevent backward flow into pool · Modular grid system for easy maintenance · 1 ˝” drain port on 1 ˝” FPT – 2” on 2” FPT · Pressure gauge · Air relief plug · Automatic air bleed capability ----These filters are discontinued!------ 12 Sq Ft CLEARWATER D.E. FILTER 18 Sq Ft CLEARWATER D.E. FILTER 24 Sq Ft CLEARWATER D.E. FILTER