Details: This FNS Plus filters are fiberglass reinforced polypropylene of advanced chemical resistant materials for superior strength and reliability. The top manifold design features the service-ease grid pack for convenient one at a time grid servicing. Unique internal design ensures optimal filtration and backwashing efficiency for longer runs between cleanings. Curved vertical grids provide maximum filter surface area for better cleaning. This Filter has a conveniently located 1-1/2-inch drain for easy and efficient cleanout. 60-square feet effective filtration area, 120-GPM flow rate. Turnover Capacity: 8 hour-57600 gallons, 10 hour-72000 gallons, 12 hour-86400 gallons. Measures 22-inch length by 50-inch height by 22-1/2-inch width.