... ,water amusement park, seawater, freshwater breed aquatics, industrial water treatment Filter shell made of fiberglass reinforced plastics, including pressure gauge, side ... /cm². Filtration rate:50 m³/h/m². specification:Dla(mm):1000,1100,1200,1400Helght(mm):1270,1270,1450,1600Inlet&outlet Dla ... .3Welght of sand(kg):500,600,650,800 GOOD SAND FILTER