The Clearflo adjustable trip lever pop-up drain works perfectly with 17 to 24 in D baths. Your bath will be even more relaxing because you can depend on solid-brass construction for durability and reliability. Kohler® finishes resist corrosion and tarnishing, exceeding industry durability standards over two times. And you have installation flexibility with above or through-the-floor options. Kohler® Pop-Up Drain, Adjustable, Series: 7161-AF, 21-1/2 in Height, 3-11/16 in Width, 17 ga Brass, For Use with: 17 to 24 in D Baths, Whirlpools and BubbleMassage™ Air Baths, Vibrant® Brushed Nickel