1.high quality 2.good services 3.competitive price Underground filters are intended to address the spatial constraints that can be found in intensely developed urban areas where the drainage areas are highly impervious (such as parking lots).Applicable in small drainage areas of 1 to 10 acres.Have few constraints; Underground filters can be used where space limitations preclude above-ground facilities.Good retrofit capabilityProvides high removal efficiencies for total suspended solids.

Model	D.I.A  mm/inches	Outlet (mm)	Filter Area (m*m)	Flow (M³/h)	Sand Weight (KG)
CU650	650/24	50	0.3	15	170
CU700	700/28	50	0.37	19	225
CU800	800/32	50	0.5	25	380
CU900	900/36	50	0.64	30	453

Under ground sand filter/water filter for swimming pool