Product Features: 
Durable corrosion proof materials for dependable all weather performance.
Large pressure sand/water drain for rapid winterizing or servicing.
Top-mount models are available with 7-position or 6-position VariFlo™ control valve.
Flange Clamp Design allows 360° rotation of valve to simplify plumbing.
Integral Top Diffuser ensures even distribution of water over the top of the sand media bed. Full-size internal piping gives smooth, free-flowing performance.
Efficient, Multilateral Underdrain Assembly with precision-engineered, self-cleaning 360° slotted laterals give totally balanced flow and backwashing.
Unitized, Corrosion-Proof Filter Tank molded of tough, durable, colorfast polymeric material for dependable, all-weather performance with only minimal care.
Integral Molded Drain Plug for easy draining of tank, without the loss of sand.
Totally Corrosion-Proof Base is rugged and attractively styled to provide strong, stable support.