First Flush 3 Inch with Max Chamber 4 Inch and Catch-All Tee

Protect your rainwater quality by diverting the most contaminated water that washes off your roof with the first rainfall using the Rain Harvesting First Flush Plus. This product comes with a Max Chamber Upgrade Kit that allows you to upgrade your first flush system from a 3" chamber pipe into 4" making it easier to divert the optimum first flush volume.