The WISY Model FS filter collector is installed vertically inline with a single rainwater downspout and can filter up to a 750 square foot roof area for irrigation, toilet flushing, car washing or other non-potable uses. Suitable for up to 32 gallons per minute flow.

The WISY model STFS standpipe downspout filter collector is installed vertically inline with a single downspout. The fine mesh filter insert removes debris and diverts over 90% of the rainwater to an underground storage tank. The filter operates as a first flush device by diverting a portion of the first rainwater until the process of surface tension reaches maximum performance.