Watts RK 909-RC1 4 - Part of the RK-909 Series Window Well Extension and elevator shafts

and elevator shafts

making it resistant to tearing and punctures

The Silt Barrier is essential for job site erosion control

12 inch fixed top

The Grate Lock clips inside the channel (or catch basin) and stays put

Watts RK 909-RC1 4 - Part of the RK-909 Series Window Well Extension and elevator shaftsFeatures Factory Replacement Kit No special tools required for changing parts All parts are made of high quality materials Specifications Buy American Act Compliant NO Compatible Series or Model 909 Compatible Size Used On 4 IN Kit Contents Check Disc, Cover O ring, Lubricant Kit Type First Check Rubber Parts Kit Lead Free YES Product Group BACKFLOW KITS UPC 098268414585