Specifications include, but are not limited to: (4) NEW Commercial Sand Filters - Maximum Operating Pressure 50 PSI - Full 2 in. Drain - 8 in. opening for easy access to sand bed - Standard 3 in. flange connections. - Black in color - To include all required valves. - Effective Filtration Area: 7.06 sq-ft - Flow Rate: 141 GPM (Residential/Commercial) - Turnover Capacity: 8 hr - 34350 gal, 10 hr - 84600 gal, 12 hr - 101520 gal - To include providing and installing all sand required (925 lbs) per manufacturers specifications. - To include providing and installing filter media sand required (650 lb) per manufacturers specifications. - To include providing and installing all filter media pea gravel required (275 lb) per manufacturers specifications. - 36 inch diameter tank - Fiberglass reinforced tank. - Pricing to include removal and proper disposal of all media in existing filters, remove and hand carry existing filters from installation location, properly dispose of existing filters, all parts and labor for installation of new filters, and all necessary training on operation and maintenance for designated staff members. - To include providing and constructing all face piping, valves, and gauges for four (4) sand filters for proper circulation and backwashing. - Provide and construct all necessary valves and plumbing for connection to the recirculation pump and chemical feeder to provide proper flow rate and T/O rate for swimming pool. - Pricing to include hand carrying four (4) new filters to installation location and all installation.