Type:Fiberglass material:Fiberglass max working pressure::250kpa 36psi 2.5bar factory testing pressure::400kpa 58psi 4.0bar max water temperature::43 degree max filtration velocity::50m3 h m2 size of silica sand::0.5-0.8mm Color:Grey,bule Application:Pool Flow rate:12-56 M3 h Type:sand filter