This stainless steel Inline Rainwater Garden Filter is engineered for plum, partially below grade installation in a single vertical rainwater downspout. When properly installed it can remove debris from rainwater from roofs of up to 2000 square feet, redirecting 90% of the clean water to above or below grade storage tanks for non-potable uses like irrigation and car washing. It operates as a first flush device. Provided with the filter and its housing is a PVC downspout conversion kit that simplifies installation.