This Commercial 12” Vortex Rainwater Filter is engineered for plum, above or below grade installation in roof drainage systems where multiple downspouts converge into a single vertical pipe which enters the filter housing. When properly installed it can filter rainwater from roofs of up to 32,000 ft. Sq., redirecting 90% of the clean water to storage tanks. The filtered rainwater can be used for toilet and urinal flushing, janitorial use, site irrigation, fire protection and other non-potable uses. Provided is a stainless steel 380 micron fine mesh filter with handle to facilitate cleaning, its polyethylene housing, lid and Upper Ring and a 28" Sq., 11 gauge stainless steel support base plate.