... water filter with nozzle,commercial sand filter a)non-poisonous b).side mount c)OEM 2012 NL series swimming pool sand water filter with nozzle,commercial sand filter ... (flow rate) 900kg(sand)NL1400, 1.54 sq meter(filter area), 4’’/110mm(valve connections) 76.8 cbm/h(flow rate) 1350kg ... (sand)NL1600, 2.06 sq meter(filter area), 4’’/110mm(valve connections) 102 cbm/h(flow rate) 2300kg ...