Our unique, patented process creates a fiberglass reinforced tank with unequaled strength and durability unsurpassed for use in all high pressure applications. Curved, modular grid assembly permits maximum filtration surface in minimum area. FEATURES: Maximum Operating Pressure 50 psi Sturdy tank clamp of premium stainless steel has permanent spring mechanism to correctly indicate proper tightness for securing tank halves Water flows in bottom, up and around filter grid for even distribution of diatomaceous earth, eliminating bridging between elements and providing highly efficient filtration Exclusive grid assembly with molded-in handles lifts out easily for inspection and periodic cleaning Backwashes from top to bottom utilizing gravity for complete cleaning of accumulated dirt and D.E. powder 2 in. bottom drain assembly permits unrestricted flow when draining filter 2 in. plumbing connections allow for maximum flow 24 SQFT FNS D.E. FILTER 180724 Regular price: $890.00 Sale price: $689.00 36 SQFT FNS D.E. FILTER 180736 Regular price: $946.00 Sale price: $759.00 48 SQFT FNS D.E. FILTER 180748 Regular price: $984.00 Sale price: $819.51 60 SQFT FNS D.E. FILTER 180760 Regular price: $1,078.00 Sale price: $921.61