InSinkErator Style Extra-Deep Disposal Flange• InSinkErator style extra-deep waste disposal flange• 4-1/2 in. rim diameter• Fits 3-1/2 in. sink opening• 2-5/8 in. deep collar for thicker sinks• Fits most ISE, Emerson, Kenmore, and Grainger waste disposals• Brass construction• Do not use plumber"s putty for installation