Sand pool filtration system CRISTAL-FLO™

For residential inground or aboveground swimming pools requiring turnover through 59,000 gallons. Permanent media high rate sand filters in multiple diameter models accommodate large and small pools, offering the best combination of economy, performance, durability and ease of maintenance. Corrosion resistant, one-piece, extra-thick molded polyethylene tank assures long service life. Top-mounted, corrosion-resistant multiport selector valve included. Also includes a convenient tank winterizing drain and continuous air relief system. Durable one-piece extra-thick molded polyethylene tank Six-position valve allows you to perform all necessary water movement functions (transparent sight-glass adapter included) Large drain plug is easy to access for removing and installing by hand or with tools, if required Contemporary style with a textured black finish that provides superior performance in all weather conditions Innovative, integrated, continuous High Flow Internal Air Relief