Elkay LKS35 3-1/2" Drain Opening, 4-1/2" Top Diameter Drain Fitting
Elkay 3-1/2" Drain Opening, 4-1/2" Top Diameter Drain Fitting Features : Polymer drain outlet fitting Includes removable basket strainer Designed to fit 3-1/2" drain opening with an overall flange size of 4-1/2" Max sink thickness : 1-1/4"