Watts - RD-970 - 4 in. x 3 in. Downspout Boot R304 Detectable Warning Surfaces The catch basin silt sacks

The catch basin silt sacks are made in bright orange making them easy to see so the inspector knows which inlets to check just by walking by

and high-flow zones

ZB415S-3IP

A 4″ IPS standpipe is included and can be extended or cut to size for the installation

end outlet connects to 3 in

Watts - RD-970 - 4 in. x 3 in. Downspout Boot R304 Detectable Warning Surfaces The catch basin silt sacksThe Watts RD 970 is a perforated stainless steel ballast guard designed for use with compatible roof drain systems. It surrounds and protects the drain dome by preventing ballast, gravel, and debris from entering the drain while still allowing high capacity water flow. Its corrosion resistant stainless steel construction makes it suitable for long term rooftop exposure, particularly on ballasted roof systems. Key Features Stainless steel ballast guard