Whitehaus RNW50L-WH Basket Strainer 3 1/2-Inch For Deep Fireclay Application, White Fits DUET # WH3018, WH3618, WH3719 Fits REVERSIBLE SERIES Accessories Basket strainer for deep fireclay application - fits only specific fireclay sink models Fits DUET # WH3018, WH3618, WH3719 Fits REVERSIBLE SERIES #