Tank trim for pressure assist toilet. For use with 503 series tanks and all OEM toilets except Kohler K4404 tank and Gerber 28-385 tank.The item "Flushmate M-101526-F31 1.6 gpf Polypropylene Toilet Tank Only, Black" is in sale since Thursday, December 26, 2019. This item is in the category "Home & Garden\Bath\Toilets & Bidets\Toilet Parts & Attachments". The seller is "plumbingplanet" and is located in Waterbury, Connecticut. This item can be shipped to United States.