Plumb Pak K835-12 Toilet Flush Valve, 3 in, Green Product Description 3in Flush Valve for Toto, Gerber, Mansfield, Crane, Jacuzzi toilets, or any flush valve with similar thread size. 3.16in OD Thread. Includes adjustable water saving flapper with timing cone. From the Manufacturer 3-Inch Toilet flush valve fits Toto, Gerber, Mansfield, Crane, Jacuzzi Toilets or any flush valve with similar thread size. Includes an adjustable water saving flapper and adjustable no cut overflow tube. Features 3in Flush Valve For Toto, Gerber, Mansfield, Crane, Jacuzzi, or any flush valve with similar thread size Includes adjustable water saving flapper with timing cone 3.16in OD Thread USA SHIPPING estimates delivery times and we work to get your item to you as quickly as possible and within those times, but please know it may take slightly longer than the estimate.