The Holdrite® HYDROFLAME™ PRO Series ''Floor Drain Sleeves'' are designed to accept 2 in, 3 in, 4 in and 6 in cast iron floor drains, with neo-lock style rubber gasket outlet. The Sleeve is cut to the desired height and the Sleeve is secured to the form deck by the installer's prefered method. The Sleeve includes a Mid-Body Seal to enhance water-tightness. (Drain NOT included). Models include #HFP-2CI-DRN thur #HFP-6CI-DRN. Adapting to some drains may require optional extension, available separately.