The 3.5" Basket Strainer w/ Disposer Trim is engineered to last, with sturdy construction and high-quality finishes. Designed for use with ISE type disposer units, this kitchen sink strainer is available in finishes that perfectly coordinate with our kitchen sinks. Fits any kitchen or bar sink with a 3.5" drain opening. Features center post with double O-ring construction for tight seal and durability. Coordinates with basket strainer. Fits most ISE disposer units with 3.375" I.D.. Matching basket strainer: DR320 (sold separately). Available in 9 finishes. One Year Warranty.