ST0720400F4C -4" Cast Iron Flat Face Eaton Model 72 Simplex Basket StrainerEaton's model 72 simplex basket strainer features a free straining area that is a minimum of six times the cross sectional pipe area! This large capacity simplex chamber is part of why the model 72 has been the industry standard in simplex straining for over 70 years. Other features include a no tool cover, precision machined seat, and threaded drain. Get the best in simplex basket strainers with the model 72 by Eaton. Part number ST0720400F4C is a 4"