Fluidtrol RSW116108631 8" x 6" Flanged FRP/PVC Strainer with Stainless Steel Basket. The RSW Series is our most popular reducing basket strainer for standard aquatic applications. The RSW hair and lint strainer design has been refined over its 30+ years of production; it offers maximum performance, is user friendly and is the premier choice for many aquatic applications. This is an eccentric reducing version of our SW Series.